feat: implement complete tree-sitter-shellspec grammar with comprehensive testing

- Add full ShellSpec grammar extending tree-sitter-bash
- Support all ShellSpec constructs: Describe, Context, It, hooks, utilities
- Include Data block parsing with statements and argument styles
- Add 61 comprehensive test cases covering real-world patterns
- Implement optimized GitHub workflows with CI/CD automation
- Configure complete development tooling (linting, formatting, pre-commit)
- Add comprehensive documentation and contribution guidelines
- Optimize grammar conflicts to zero warnings
- Support editor integration for Neovim, VS Code, Emacs

Breaking Changes:
- Initial release, no previous API to break

BREAKING CHANGE: Initial implementation of tree-sitter-shellspec grammar

# Conflicts:
#	.github/workflows/codeql.yml
#	.github/workflows/pr-lint.yml
#	.pre-commit-config.yaml

# Conflicts:
#	.github/workflows/pr-lint.yml

# Conflicts:
#	.github/workflows/pr-lint.yml

.github/workflows/sync-labels.yml

@@ -8,13 +8,12 @@ on:
       - main
       - master
     paths:
-      - '.github/labels.yml'
-      - '.github/workflows/sync-labels.yml'
+      - ".github/labels.yml"
+      - ".github/workflows/sync-labels.yml"
   schedule:
-    - cron: '34 5 * * *' # Run every day at 05:34 AM UTC
+    - cron: "34 5 * * *" # Run every day at 05:34 AM UTC
   workflow_call:
   workflow_dispatch:
-  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}