add release workflow

Author: Axwabo

.github/workflows/release.yml

@@ -0,0 +1,53 @@
+name: Release
+
+on:
+  release:
+    types: [ created ]
+
+permissions:
+  contents: write
+
+jobs:
+
+  release:
+    runs-on: ubuntu-latest
+
+    env:
+      ReferenceUrl: https://exmod-team.github.io/SL-References/Dev.zip
+      ReferencePath: ${{ github.workspace }}/References
+
+    steps:
+
+      - uses: actions/checkout@v4
+
+      - name: Set Up .NET
+        uses: actions/setup-dotnet@v4.0.1
+        with:
+          dotnet-version: 9.0.x
+
+      - name: Download References
+        run: |
+          wget -O "References.zip" ${{ env.ReferenceUrl }}
+          unzip -d ${{ env.ReferencePath }} "References.zip"
+
+      - name: Rename Publicized Assemblies
+        working-directory: ${{ env.ReferencePath }}
+        run: |
+          mv Assembly-CSharp-Publicized.dll Assembly-CSharp.dll
+          mv Mirror-Publicized.dll Mirror.dll
+
+      - name: Download SCPSL-Helpers
+        uses: robinraju/release-downloader@v1.12
+        with:
+          repository: "Axwabo/SCPSL-Helpers"
+          latest: true
+          fileName: '*'
+          out-file-path: ${{ env.ReferencePath }}
+
+      - name: Build
+        run: dotnet build Axwabo.CommandSystem -c Release -o Output
+
+      - name: Upload Assets
+        uses: softprops/action-gh-release@v2
+        with:
+          files: "Output/Axwabo.CommandSystem.dll,Output/Axwabo.CommandSystem.xml"