Add GitHub Actions workflow for automated release creation with changelog generation

Author: Bananz0

.github/workflows/release.yml

@@ -0,0 +1,69 @@
+name: Create Release
+
+on:
+  push:
+    tags:
+      - 'v*.*.*' 
+
+jobs:
+  create-release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 
+      
+      - name: Get version from tag
+        id: get_version
+        run: echo "VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+      
+      - name: Get previous tag
+        id: get_previous_tag
+        run: |
+          PREVIOUS_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo "")
+          echo "PREVIOUS_TAG=$PREVIOUS_TAG" >> $GITHUB_OUTPUT
+      
+      - name: Generate changelog
+        id: changelog
+        run: |
+          if [ -n "${{ steps.get_previous_tag.outputs.PREVIOUS_TAG }}" ]; then
+            CHANGELOG=$(git log ${{ steps.get_previous_tag.outputs.PREVIOUS_TAG }}..HEAD --pretty=format:"- %s (%h)" --no-merges)
+          else
+            CHANGELOG="Initial release"
+          fi
+          echo "CHANGELOG<<EOF" >> $GITHUB_OUTPUT
+          echo "$CHANGELOG" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+      
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          tag_name: ${{ steps.get_version.outputs.VERSION }}
+          name: ${{ steps.get_version.outputs.VERSION }}
+          body: |
+            ## eGPU Auto-Enable ${{ steps.get_version.outputs.VERSION }}
+            
+            ### Installation
+            ```powershell
+            # Run as Administrator
+            irm https://raw.githubusercontent.com/Bananz0/eGPUae/main/Install-eGPU-Startup.ps1 | iex
+            ```
+            
+            ### What's Changed
+            ${{ steps.changelog.outputs.CHANGELOG }}
+            
+            ### Requirements
+            - Windows 10/11
+            - PowerShell 7.0+
+            - Administrator privileges
+            
+            **Full Changelog**: https://github.com/Bananz0/eGPUae/compare/${{ steps.get_previous_tag.outputs.PREVIOUS_TAG }}...${{ steps.get_version.outputs.VERSION }}
+          draft: false
+          prerelease: false
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}