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

test/spec/17.putsn_puts_directive_spec.sh

@@ -0,0 +1,34 @@
+#shellcheck shell=sh
+
+Describe '%putsn directive'
+  Example 'outputs arguments'
+    foo() { %putsn value; }
+    When call foo
+    The entire output should eq "value${SHELLSPEC_LF}"
+  End
+End
+
+Describe '%= directive'
+  Example 'is alias for %putsn'
+    # shellcheck disable=SC2276
+    foo() { %= value; }
+    When call foo
+    The entire output should eq "value${SHELLSPEC_LF}"
+  End
+End
+
+Describe '%puts directive'
+  Example 'outputs arguments without last <LF>'
+    foo() { %puts value; }
+    When call foo
+    The entire output should eq "value"
+  End
+End
+
+Describe '%- directive'
+  Example 'is alias for %puts'
+    foo() { %- value; }
+    When call foo
+    The entire output should eq "value"
+  End
+End