chore(tooling): add forgejo actions workflow

.forgejo/workflows/main.yaml

@@ -0,0 +1,24 @@
+---
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  fmt:
+    runs-on: 'self-hosted'
+    steps:
+      - uses: 'actions/checkout@v4'
+      - uses: 'actions/setup-go@v5'
+        with:
+          go-version-file: 'go.mod'
+      - run: |
+          make tidy no-dirty
+  test:
+    runs-on: 'self-hosted'
+    steps:
+      - uses: 'actions/checkout@v4'
+      - uses: 'actions/setup-go@v5'
+        with:
+          go-version-file: 'go.mod'
+      - run: |
+          make check tidy no-dirty