Initial commit

Add DIR.Lib NuGet package with rendering primitives (RGBAColor32, RectInt, PointInt, TextAlign, Renderer) published under SharpAstro.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: sebgod

.github/workflows/dotnet.yml

@@ -0,0 +1,44 @@
+name: CI/CD
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+env:
+  VERSION_PREFIX: 1.0.${{ github.run_number }}
+  VERSION_REV: ${{ github.run_attempt }}
+  VERSION_HASH: +${{ github.sha }}
+  BUILD_CONF: Release
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 10.0.x
+    - name: Restore dependencies
+      run: dotnet restore
+    - name: Build
+      run: dotnet build -c $BUILD_CONF --no-restore -p:Version=${VERSION_PREFIX}${VERSION_REV}${VERSION_HASH} -p:FileVersion=${VERSION_PREFIX}.${VERSION_REV} -p:ContinuousIntegrationBuild=true
+    - name: Upload NuGet package
+      uses: actions/upload-artifact@v4
+      with:
+        name: nuget-packages
+        path: '**/*.nupkg'
+        retention-days: 5
+
+  publish-nuget:
+    needs: build
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+    steps:
+    - name: Download NuGet packages
+      uses: actions/download-artifact@v4
+      with:
+        name: nuget-packages
+    - name: Push NuGet package
+      run: dotnet nuget push **/*.nupkg -s nuget.org -k ${{ secrets.NUGET_API_KEY }}