feat: writing some tests and have a nicer api now

Co-authored-by: Patrik Oldsberg <poldsberg@gmail.com>
Co-authored-by: Fredrik Adelöw <freben@users.noreply.github.com>
Co-authored-by: Johan Haals <johan.haals@gmail.com>

Signed-off-by: blam <ben@blam.sh>

plugins/scaffolder/package.json

@@ -33,11 +33,12 @@
     "@backstage/catalog-client": "^0.3.13",
     "@backstage/catalog-model": "^0.8.2",
     "@backstage/config": "^0.1.5",
-    "@backstage/errors": "^0.1.1",
     "@backstage/core": "^0.7.12",
     "@backstage/integration": "^0.5.6",
     "@backstage/integration-react": "^0.1.3",
     "@backstage/plugin-catalog-react": "^0.2.2",
+    "@backstage/core-plugin-api": "^0.1.1",
+    "@backstage/errors": "^0.1.1",
     "@backstage/theme": "^0.2.8",
     "@material-ui/core": "^4.11.0",
     "@material-ui/icons": "^4.9.1",
@@ -46,10 +47,10 @@
     "@rjsf/material-ui": "^2.4.0",
     "@types/react": "^16.9",
     "classnames": "^2.2.6",
-    "json-schema": "^0.3.0",
     "git-url-parse": "^11.4.4",
     "humanize-duration": "^3.25.1",
     "immer": "^9.0.1",
+    "json-schema": "^0.3.0",
     "luxon": "^1.25.0",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
@@ -66,9 +67,9 @@
     "@backstage/test-utils": "^0.1.13",
     "@testing-library/jest-dom": "^5.10.1",
     "@testing-library/react": "^11.2.5",
+    "@testing-library/react-hooks": "^3.3.0",
     "@testing-library/user-event": "^13.1.8",
     "@types/humanize-duration": "^3.18.1",
-    "@testing-library/react-hooks": "^3.3.0",
     "@types/jest": "^26.0.7",
     "@types/node": "^14.14.32",
     "cross-fetch": "^3.0.6",