setup license finder action

.github/workflows/license_finder.yml

@@ -0,0 +1,25 @@
+name: License Finder
+
+on:
+  workflow_dispatch:
+  workflow_call:
+  push:
+
+jobs:
+  license_finder:
+    name: Audit 3rd-Party Licenses
+    runs-on: [x64, qemu-host]
+    container:
+      image: ghcr.io/viamrobotics/canon:amd64-cache
+      options: --platform linux/amd64
+    timeout-minutes: 30
+
+    steps:
+      - name: Check out code in rdk directory
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+
+      - name: Run license finder
+        run: |
+          sudo -u testbot bash -lc 'license_finder'

.gitignore

@@ -35,3 +35,6 @@ dist/*
 
 # exclude files from `ag` search
 .ignore
+
+# license finder
+lf_logs/