Add initial release of Exult Usecode Syntax extension with packaging and CI/CD setup

- Implemented GitHub Actions workflows for packaging and publishing
- Created comprehensive README, CHANGELOG, and LICENSE files
- Added .gitignore and .vscodeignore for build artifacts
- Included sample files and images for documentation
- Updated package.json with necessary metadata and keywords

Author: marzojr

.github/workflows/publish.yml

@@ -0,0 +1,68 @@
+name: Package and Publish Extension
+
+on:
+  # Trigger on version tags (e.g., v0.1.0, v1.2.3)
+  push:
+    tags:
+      - "v*.*.*"
+
+  # Allow manual trigger from GitHub UI
+  workflow_dispatch:
+
+jobs:
+  package:
+    name: Package Extension
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "18"
+
+      - name: Install vsce
+        run: npm install -g vsce
+
+      - name: Package extension
+        run: vsce package
+
+      - name: Upload VSIX artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: vscode-extension
+          path: "*.vsix"
+
+  publish:
+    name: Publish to Marketplace
+    runs-on: ubuntu-latest
+    needs: package
+    # Only publish on tag pushes (not manual triggers)
+    if: startsWith(github.ref, 'refs/tags/')
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "18"
+
+      - name: Install vsce
+        run: npm install -g vsce
+
+      - name: Publish to VS Code Marketplace
+        env:
+          VSCE_TOKEN: ${{ secrets.VSCE_TOKEN }}
+        run: vsce publish --pat "$VSCE_TOKEN"
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: "*.vsix"
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test-package.yml

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+name: Package Extension (Test)
+
+on:
+  # Trigger on pushes to main branch
+  push:
+    branches: [main, master]
+
+  # Trigger on pull requests
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  test-package:
+    name: Test Package
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "18"
+
+      - name: Install vsce
+        run: npm install -g vsce
+
+      - name: Package extension (dry run)
+        run: vsce package --out test-extension.vsix
+
+      - name: List package contents
+        run: vsce ls
+
+      - name: Upload test VSIX
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-extension
+          path: "test-extension.vsix"

.gitignore

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+# VS Code Extension build artifacts
+*.vsix
+
+# Node.js dependencies (if added later)
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# OS-specific files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Editor/IDE files
+.vscode/settings.json
+.vscode/launch.json
+.vscode/extensions.json
+*.swp
+*.swo
+*~
+
+# Temporary files
+*.tmp
+*.temp
+*.log
+
+# Build and packaging files
+out/
+dist/
+build/
+
+# Test coverage
+coverage/
+.nyc_output/
+
+# Environment files
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local

.vscodeignore

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+# Files and directories to exclude from the packaged extension
+.vscode/
+.git/
+.gitignore
+.github/
+node_modules/
+*.vsix
+*.log
+.DS_Store
+Thumbs.db
+
+# Development files
+vscode-usecode-syntax.code-workspace
+
+# Test files (uncomment if you don't want samples in the package)
+# samples/

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.0] - 2025-09-28
+
+### Added
+
+- Initial release: TextMate grammars for UseCode (.uc/.ucc/.uh/.ucxt) and UseCode assembly (.uca)
+- Language configuration with brackets, auto-closing pairs, and surrounding pairs
+- Sample file at `samples/test.uc` for testing and verification
+- Comprehensive syntax highlighting for:
+  - Keywords, types, operators, and control flow
+  - Strings with escape sequences and rune escapes
+  - Line and block comments
+  - Preprocessor directives (#include, #game, #line, etc.)
+  - Intrinsic function highlighting (UI_* functions)
+  - Script commands and assembly mnemonics
+  - Labels, numbers (hex and decimal), and identifiers
+
+### Documentation & Packaging
+
+- Added GPL-2.0-or-later LICENSE.md with proper markdown formatting
+- Created marketplace-ready README.md with features, installation, and usage instructions
+- Added CHANGELOG.md for tracking releases
+- Added comprehensive .gitignore for build artifacts and temporary files
+- Added .vscodeignore to exclude development files from packaged extension
+
+### Package Metadata
+
+- Updated package.json with marketplace-required fields:
+  - License field set to "GPL-2.0-or-later"
+  - Keywords for discoverability: "usecode", "exult", "ucc", "syntax", "language"
+  - Icon placeholder reference
+  - Repository, bugs, and homepage placeholder URLs (replace with actual repo)
+
+### CI/CD
+
+- Added GitHub Actions workflows:
+  - `publish.yml` - Automated packaging and publishing on version tags
+  - `test-package.yml` - Continuous integration testing of packaging on pushes/PRs
+- Workflows support automatic publishing to VS Code Marketplace using VSCE_TOKEN secret