ci: license checker

Author: jamesbhobbs

.github/workflows/ci.yml

@@ -68,3 +68,6 @@ jobs:
       - name: Check dependencies
         run: npm run checkDependencies
         continue-on-error: true
+
+      - name: Check licenses
+        run: npm run check-licenses

package.json

@@ -2055,6 +2055,7 @@
         "build:prerelease": "cross-env IS_PRE_RELEASE_VERSION_OF_JUPYTER_EXTENSION=true npm run build",
         "build:stable": "cross-env IS_PRE_RELEASE_VERSION_OF_JUPYTER_EXTENSION=false npm run build",
         "build": "concurrently npm:compile-release npm:updatePackageJsonForBundle",
+        "check-licenses": "npx license-checker-rseidelsohn --onlyAllow 'MIT;Apache-2.0;ISC;BSD-2-Clause;BSD-3-Clause;0BSD;Python-2.0;CC0-1.0;CC-BY-3.0;CC-BY-4.0;Unlicense;BlueOak-1.0.0' --excludePrivatePackages",
         "checkDependencies": "gulp checkDependencies",
         "clean": "gulp clean",
         "compile-esbuild-watch": "npx tsx build/esbuild/build.ts --watch",