chore(ci): create github actions workflow files for fossa (#3818)

.github/workflows/fossa.yml

@@ -0,0 +1,31 @@
+name: Dependency License Scanning
+
+on:
+  push:
+    branches:
+      - master
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  fossa:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Fossa init
+      run: |- 
+        curl -H 'Cache-Control: no-cache' https://raw.githubusercontent.com/fossas/fossa-cli/master/install.sh | bash
+        fossa init
+    - name: Set env
+      run: echo ::set-env name=line_number::$(grep -n "project" .fossa.yml | cut -f1 -d:)
+    - name: Configuration
+      run: |-
+        sed -i "${line_number}s|.*|  project: git@github.com:${GITHUB_REPOSITORY}.git|" .fossa.yml
+        cat .fossa.yml
+    - name: Upload dependencies
+      run: fossa analyze --debug
+      env:
+        FOSSA_API_KEY: ${{ secrets.FOSSA_API_KEY }}