added github workflow

Author: alextrevisan

.github/workflows/release.yml

@@ -0,0 +1,44 @@
+name: Build and Release Extension
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '16'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install vsce
+        run: npm install -g @vscode/vsce
+
+      - name: Package extension
+        run: vsce package
+
+      - name: Get version from tag
+        id: get_version
+        run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+
+      - name: Create Release
+        id: create_release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: ps1-dev-extension-*.vsix
+          name: Release ${{ steps.get_version.outputs.VERSION }}
+          draft: false
+          prerelease: false
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

RELEASE.md

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+# Release Process
+
+This document describes how to create a new release of the PS1 Development Extension.
+
+## Automated Release Process
+
+The extension uses GitHub Actions to automate the build and release process.
+
+### Creating a New Release
+
+1. Update the version number in `package.json`
+2. Commit your changes
+3. Create and push a new tag with the version number:
+
+```bash
+git tag v0.1.0  # Replace with your version
+git push origin v0.1.0
+```
+
+4. The GitHub Action will automatically:
+   - Build the extension
+   - Package it as a VSIX file
+   - Create a GitHub Release with the VSIX file attached
+
+### Release Workflow Details
+
+The workflow is defined in `.github/workflows/release.yml` and is triggered when a tag starting with 'v' is pushed to the repository.
+
+## Manual Release Process
+
+If you need to create a release manually:
+
+1. Update the version number in `package.json`
+2. Run the packaging script:
+
+```bash
+./package-extension.ps1
+```
+
+3. The VSIX file will be created in the root directory
+4. Upload this file to a GitHub Release manually