Integrate FOSSA (#86)

Add a FOSSA check to the build steps.

Resolves: GO-468

.github/workflows/go.yml

@@ -27,6 +27,11 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v2
 
+    - name: FOSSA analysis
+      uses: fossas/fossa-action@v1
+      with:
+        api-key: ${{ secrets.FOSSA_API_KEY }}
+
     - name: Load cached dependencies
       uses: actions/cache@v1
       with:

.gitignore

@@ -10,3 +10,6 @@ lint.log
 
 # Profiling output
 *.prof
+
+# Output of fossa analyzer
+/fossa