Add workflow to check licenses (#1110)

.github/workflows/check-licenses.yaml

@@ -0,0 +1,41 @@
+name: Check Licenses
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      # Labels are needed to handle external contributors
+      - labeled
+      - unlabeled
+    paths:
+      # Self
+      - ".github/workflows/check-licenses.yaml"
+      # JS/TS Ecosystem
+      - "**/package.json"
+      - "**/pnpm-lock.yaml"
+      - "**/package-lock.json"
+
+jobs:
+  default:
+    permissions:
+      contents: read
+      pull-requests: write
+    uses: saleor/saleor-internal-actions/.github/workflows/run-license-check.yaml@v1
+    with:
+      # List of ecosystems to scan.
+      ecosystems: >-
+        javascript
+      # Grant rules (https://github.com/anchore/grant/blob/4362dc22cf5ea9baeccfa59b2863879afe0c30d7/README.md#usage)
+      rules: |
+        # Explicitly allow LGPL as "*GPL*" rule will cause to reject them otherwise.
+        - pattern: "*lgpl*"
+          name: "allow-lgpl"
+          mode: "allow"
+          reason: "LGPL is allowed."
+        - pattern: "*gpl*"
+          name: "deny-gpl"
+          mode: "deny"
+          reason: "GPL licenses are not compatible with BSD-3-Clause"
+        - pattern: "*proprietary*"
+          name: "deny-proprietary"
+          mode: "deny"

package.json

@@ -3,6 +3,7 @@
 	"version": "0.1.0",
 	"private": true,
 	"type": "module",
+	"license": "BSD-3-Clause",
 	"scripts": {
 		"dev": "next dev",
 		"build": "next build",