Add manual build

Author: JonasProgrammer

.github/workflows/manual-build.yml

@@ -0,0 +1,18 @@
+name: Manual-build
+on:
+  workflow_dispatch:
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          version: latest
+          args: release --snapshot --skip-publish
+      - name: Upload assets
+        uses: actions/upload-artifact@v2
+        with:
+          name: manual-build
+          path: dist/*