fix: simplify project features response & prep for flatgeobuf osm ext… #452

Job	Run time
frontend-tests / Run Frontend Tests	42s
pytest / check-img-cache	16s
pytest / test-img-build	0s
pytest / run-tests	1m 53s
frontend-build / build-image	2m 7s
backend-build / build-image	3m 16s
frontend-build / scan-image	21s
smoke-test-frontend	6s
backend-build / scan-image	1m 0s
smoke-test-backend	1m 26s
deploy-containers / remote-deploy	1m 28s
	12m 35s

Provide feedback