ci(.github): add fossa.yml and .fossa.yml config

Signed-off-by: Vaughn Dice <vaughn.dice@fermyon.com>
Co-authored-by: Kate Goldenring <kate.goldenring@fermyon.com>
Co-authored-by: Lann <github-lann@lannbox.com>

Author: 3 people

.github/workflows/fossa.yml

@@ -0,0 +1,25 @@
+name: fossa
+on:
+  push:
+    branches:
+      - main
+      - v*
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  fossa-scan:
+    # Don't attempt to run FOSSA on forks or on PRs from forks (no access to GH secrets)
+    if: ${{ github.repository_owner == 'spinframework' && !github.event.pull_request.head.repo.fork }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Run FOSSA Scan"
+        uses: fossas/fossa-action@v1.7.0
+        with:
+          api-key: ${{ secrets.FOSSA_API_KEY }}