add pre commit hook for linter

Author: strowk

Diff for: .githooks/pre-commit

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+set -euo pipefail
+golangci-lint run --timeout 5m

Diff for: CONTRIBUTION.md

@@ -124,3 +124,10 @@ The only issue with this reload is that server is not aware of initialization, h
 
 It does have an effect, though, that since clients typically would cache what tools/prompts/resources are available, adding new one would require actually asking for full restart.
 
+## Git Hooks
+
+Setup git hooks used in project by running:
+
+```bash
+git config core.hooksPath .githooks
+```