ci: add dispatch workflow to build

.github/workflows/go.yml

@@ -0,0 +1,21 @@
+name: Go
+
+on:
+  - workflow_dispatch
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.17
+    - name: Install requirements
+      run: sudo apt-get install -y wireguard-tools
+
+    - name: Build
+      run: make