[CI] Add GHA CI and release flow

Author: FranzBusch

Diff for: .github/release.yml

@@ -0,0 +1,15 @@
+changelog:
+  categories:
+    - title: SemVer Major
+      labels:
+        - ⚠️ semver/major
+    - title: SemVer Minor
+      labels:
+        - semver/minor
+    - title: SemVer Patch
+      labels:
+        - semver/patch
+    - title: Other Changes
+      labels:
+        - semver/none
+        - "*"

Diff for: .github/workflows/pull_request.yml

@@ -0,0 +1,25 @@
+name: PR
+
+on:
+    pull_request:
+      types: [opened, reopened, synchronize]
+
+jobs:
+    soundness:
+        name: Soundness
+        uses: apple/swift-nio/.github/workflows/soundness.yml@main
+        with:
+            license_header_check_project_name: "SwiftAWSLambdaRuntime"
+
+    unit-tests:
+        name: Unit tests
+        uses: apple/swift-nio/.github/workflows/unit_tests.yml@main
+        with:
+            linux_5_9_arguments_override: "--warnings-as-errors --explicit-target-dependency-import-check error"
+            linux_5_10_arguments_override: "--warnings-as-errors --explicit-target-dependency-import-check error"
+            linux_nightly_6_0_arguments_override: "--warnings-as-errors --explicit-target-dependency-import-check error"
+            linux_nightly_main_arguments_override: "--warnings-as-errors --explicit-target-dependency-import-check error"
+
+    swift-6-language-mode:
+        name: Swift 6 Language Mode
+        uses: apple/swift-nio/.github/workflows/swift_6_language_mode.yml@main

Diff for: .licenseignore

@@ -0,0 +1,26 @@
+.gitignore
+.licenseignore
+.swiftformatignore
+.spi.yml
+.swift-format
+.github/*
+CODE_OF_CONDUCT.md
+CONTRIBUTING.md
+CONTRIBUTORS.txt
+LICENSE.txt
+NOTICE.txt
+Package.swift
+Package.resolved
+README.md
+SECURITY.md
+docker/*
+**/*.docc/*
+**/.gitignore
+**/Package.swift
+**/Package.resolved
+**/README.md
+**/docker-compose.yaml
+**/docker/*
+**/.dockerignore
+**/Makefile
+**/*.html