Add Gitea Actions workflows for CI and NuGet release

.gitea/workflows/ci.yml

@@ -0,0 +1,39 @@
+# OpenMaui Linux CI/CD Pipeline for Gitea
+name: CI
+
+on:
+  push:
+    branches: [main, develop]
+  pull_request:
+    branches: [main]
+
+env:
+  DOTNET_NOLOGO: true
+  DOTNET_CLI_TELEMETRY_OPTOUT: true
+
+jobs:
+  build:
+    name: Build and Test
+    runs-on: windows
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --configuration Release --no-restore
+
+      - name: Run tests
+        run: dotnet test --configuration Release --no-build --verbosity normal
+        continue-on-error: true
+
+      - name: Pack NuGet (preview)
+        run: dotnet pack --configuration Release --no-build -o ./nupkg
+
+      - name: Upload NuGet artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: nuget-package
+          path: ./nupkg/*.nupkg

.gitea/workflows/release.yml

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+# OpenMaui Linux Release - Publish to NuGet
+name: Release to NuGet
+
+on:
+  release:
+    types: [published]
+  push:
+    tags:
+      - 'v*'
+
+env:
+  DOTNET_NOLOGO: true
+  DOTNET_CLI_TELEMETRY_OPTOUT: true
+
+jobs:
+  release:
+    name: Build and Publish to NuGet
+    runs-on: windows
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Extract version from tag
+        id: version
+        shell: pwsh
+        run: |
+          $tag = "${{ github.ref_name }}"
+          $version = $tag -replace '^v', ''
+          echo "VERSION=$version" >> $env:GITHUB_OUTPUT
+          echo "Building version: $version"
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --configuration Release --no-restore
+
+      - name: Run tests
+        run: dotnet test --configuration Release --no-build --verbosity normal
+
+      - name: Pack NuGet package
+        run: dotnet pack --configuration Release --no-build -o ./nupkg /p:PackageVersion=${{ steps.version.outputs.VERSION }}
+
+      - name: Publish to NuGet.org
+        run: dotnet nuget push ./nupkg/*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate