Modifications after PR review

* Change entity filter to be an actual entity filter instead of a list of kinds or types
* Modify/simplify types a little bit
* Split common type libs to one for node and one isomorphic
* Remove unnecessary items from FactChecker interface to simplify execution loop.

Needs still matching README.md changes.

Signed-off-by: Jussi Hallila <jussi@hallila.com>

plugins/tech-insights-common/package.json

@@ -30,11 +30,8 @@
     "clean": "backstage-cli clean"
   },
   "dependencies": {
-    "@backstage/backend-common": "^0.9.0",
-    "@backstage/config": "^0.1.8",
     "@types/luxon": "^2.0.5",
-    "luxon": "^2.0.2",
-    "winston": "^3.2.1"
+    "luxon": "^2.0.2"
   },
   "devDependencies": {
     "@backstage/cli": "^0.7.1"