Update infrastructure for spell checking project contents

Arduino tooling projects use a standardized infrastructure. A centralized collection of reusable infrastructure assets
is maintained in a dedicated repository:

https://github.com/arduino/tooling-project-assets

Since the time this project's infrastructure was installed, some advancements have been made in the upstream "template"
assets. The project's infrastructure is hereby brought up to date with the state of the art upstream assets.

The significant changes:

- Migration to the use of the Task task runner to allow contributors to easily run the same operations locally as is
  done by the CI system on GitHub.
- Use of Poetry and Dependabot for controlled management of the dependencies.

Author: per1234

Diff for: .codespellrc

@@ -0,0 +1,9 @@
+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/spell-check/.codespellrc
+# See: https://github.com/codespell-project/codespell#using-a-config-file
+[codespell]
+# In the event of a false positive, add the problematic word, in all lowercase, to a comma-separated list here:
+ignore-words-list = afterall,clude
+skip = ./.git,./.licenses,.pytest_cache,__pycache__,node_modules,./go.mod,./go.sum,./package-lock.json,./poetry.lock,./yarn.lock
+builtin = clear,informal,en-GB_to_en-US
+check-filenames =
+check-hidden =

Diff for: .github/workflows/spell-check-task.yml

@@ -0,0 +1,66 @@
+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/spell-check-task.md
+name: Spell Check
+
+# See: https://docs.github.com/actions/using-workflows/events-that-trigger-workflows
+on:
+  create:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch new misspelling detections resulting from dictionary updates.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  run-determination:
+    runs-on: ubuntu-latest
+    outputs:
+      result: ${{ steps.determination.outputs.result }}
+    steps:
+      - name: Determine if the rest of the workflow should run
+        id: determination
+        run: |
+          RELEASE_BRANCH_REGEX="refs/heads/[0-9]+.[0-9]+.x"
+          # The `create` event trigger doesn't support `branches` filters, so it's necessary to use Bash instead.
+          if [[
+            "${{ github.event_name }}" != "create" ||
+            "${{ github.ref }}" =~ $RELEASE_BRANCH_REGEX
+          ]]; then
+            # Run the other jobs.
+            RESULT="true"
+          else
+            # There is no need to run the other jobs.
+            RESULT="false"
+          fi
+
+          echo "result=$RESULT" >> $GITHUB_OUTPUT
+
+  spellcheck:
+    needs: run-determination
+    if: needs.run-determination.outputs.result == 'true'
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install Python
+        uses: actions/setup-python@v4
+        with:
+          python-version-file: .python-version
+
+      - name: Install Poetry
+        run: |
+          pipx install \
+            --python "$(which python)" \
+            poetry
+
+      - name: Install Task
+        uses: arduino/setup-task@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Spell check
+        run: task general:check-spelling

Diff for: .github/workflows/spell-check.yml

@@ -3,7 +3,7 @@
 [![Check Action Metadata status](https://github.com/arduino/compile-sketches/actions/workflows/check-action-metadata-task.yml/badge.svg)](https://github.com/arduino/compile-sketches/actions/workflows/check-action-metadata-task.yml)
 [![Tests](https://github.com/arduino/compile-sketches/workflows/Test%20Python%20code/badge.svg)](https://github.com/arduino/compile-sketches/actions?workflow=Test+Python+code)
 [![Check Python status](https://github.com/arduino/compile-sketches/actions/workflows/check-python-task.yml/badge.svg)](https://github.com/arduino/compile-sketches/actions/workflows/check-python-task.yml)
-[![Spell Check](https://github.com/arduino/compile-sketches/workflows/Spell%20Check/badge.svg)](https://github.com/arduino/compile-sketches/actions?workflow=Spell+Check)
+[![Spell Check status](https://github.com/arduino/compile-sketches/actions/workflows/spell-check-task.yml/badge.svg)](https://github.com/arduino/compile-sketches/actions/workflows/spell-check-task.yml)
 [![codecov](https://codecov.io/gh/arduino/compile-sketches/branch/main/graph/badge.svg?token=Uv6f1ebMZ4)](https://codecov.io/gh/arduino/compile-sketches)
 
 This action checks whether [Arduino](https://www.arduino.cc/) sketches compile and produces a report of data from the compilations.

Diff for: README.md

@@ -6,11 +6,13 @@ tasks:
     desc: Check for problems with the project
     deps:
       - task: action:validate
+      - task: general:check-spelling
       - task: python:lint
 
   fix:
     desc: Make automated corrections to the project's files
     deps:
+      - task: general:correct-spelling
       - task: python:format
 
   # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/check-action-metadata-task/Taskfile.yml
@@ -35,6 +37,26 @@ tasks:
             -s "{{.ACTION_METADATA_SCHEMA_PATH}}" \
             -d "action.yml"
 
+  # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/spell-check-task/Taskfile.yml
+  general:check-spelling:
+    desc: Check for commonly misspelled words
+    deps:
+      - task: poetry:install-deps
+        vars:
+          POETRY_GROUPS: dev
+    cmds:
+      - poetry run codespell
+
+  # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/spell-check-task/Taskfile.yml
+  general:correct-spelling:
+    desc: Correct commonly misspelled words where possible
+    deps:
+      - task: poetry:install-deps
+        vars:
+          POETRY_GROUPS: dev
+    cmds:
+      - poetry run codespell --write-changes
+
   # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/npm-task/Taskfile.yml
   npm:install-deps:
     desc: Install dependencies managed by npm

Diff for: Taskfile.yml

@@ -16,6 +16,7 @@ semver = "2.13.0"
 
 [tool.poetry.group.dev.dependencies]
 black = "23.1.0"
+codespell = "2.2.4"
 coverage = "7.2.2"
 pytest = "7.2.2"
 pytest-mock = "3.10.0"