Add a FossaPage that shows the license compliance status of all components in the catalog

Signed-off-by: Dominik Henneke <dominik.henneke@sda-se.com>

plugins/fossa/package.json

@@ -33,12 +33,15 @@
   "dependencies": {
     "@backstage/catalog-model": "^0.7.3",
     "@backstage/core": "^0.7.5",
+    "@backstage/errors": "^0.1.1",
     "@backstage/plugin-catalog-react": "^0.1.1",
     "@backstage/theme": "^0.2.5",
     "@material-ui/core": "^4.11.0",
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.45",
     "cross-fetch": "^3.0.6",
+    "luxon": "^1.26.0",
+    "p-limit": "^3.0.2",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "react-use": "^15.3.3"
@@ -49,6 +52,7 @@
     "@backstage/test-utils": "^0.1.10",
     "@testing-library/jest-dom": "^5.10.1",
     "@testing-library/react": "^11.2.5",
+    "@testing-library/react-hooks": "^3.4.2",
     "@testing-library/user-event": "^12.0.7",
     "@types/jest": "^26.0.7",
     "@types/node": "^14.14.32",