Add CodeQL workflow

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/codeql.yml

@@ -0,0 +1,39 @@
+name: codeql
+
+on:
+  push:
+    branches:
+      - 'main'
+    tags:
+      - '*'
+  pull_request:
+    branches:
+      - 'main'
+  schedule:
+    - cron: '0 12 * * 6'
+
+jobs:
+  codeql:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+      -
+        name: Checkout HEAD on PR
+        if: ${{ github.event_name == 'pull_request' }}
+        run: |
+          git checkout HEAD^2
+      -
+        name: Initialize CodeQL
+        uses: github/codeql-action/init@v1
+        with:
+          languages: go
+      -
+        name: Autobuild
+        uses: github/codeql-action/autobuild@v1
+      -
+        name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v1

.github/workflows/godev.yml

@@ -18,3 +18,5 @@ jobs:
         name: Call pkg.go.dev
         run: |
           go get github.com/${GITHUB_REPOSITORY}@${GITHUB_REF#refs/tags/}
+        env:
+          GOPROXY: https://proxy.golang.org