Add GoSec workflow

Author: lukasz-zimnoch

.github/workflows/gosec.yml

@@ -0,0 +1,20 @@
+name: Gosec
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  scan:
+    runs-on: ubuntu-latest
+    env:
+      GO111MODULE: on
+    steps:
+      - uses: actions/checkout@v2
+      - uses: securego/gosec@master
+        with:
+          args: ./...