ci: add workflows for both Actions

- add a workflow for Forgejo Actions
- add a workflow for GitHub Actions

.forgejo/workflows/workflow.yaml

@@ -0,0 +1,20 @@
+---
+on:
+  pull_request:
+    types:
+    - opened
+    - reopened
+    - synchronize
+
+jobs:
+  test:
+    runs-on: docker
+    steps:
+    - name: Checkout Repository
+      uses: https://code.forgejo.org/actions/checkout@v3
+    - name: Setup Go
+      uses: https://code.forgejo.org/actions/setup-go@v3
+      with:
+        go-version: '1.21'
+    - name: Test
+      run: go test -v ./...

.github/workflows/workflow.yaml

@@ -0,0 +1,14 @@
+---
+name: test
+on:
+  push:
+    branches:
+    - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/setup-go@v3
+    - uses: actions/checkout@v3
+    - run: go test -v ./...