Add config flow to geo_json_events (#87062)

* migrated geo_json_events integration to config flow

* improve test coverage

* code reformatting

* fix tests

* fix entity manager

* changes after review

* improve test coverage and fixed form

* remove unused code

* remove commented out code

* changes after review

* make title prettier

* fixed tests

* simplified code

* changes after review

* fix test

* push deprecation out

* changes after review

* changes after review

* changes after review

* changes after review

* changes after review

* removed scan interval from user flow and import flow

homeassistant/generated/integrations.json

@@ -1893,7 +1893,7 @@
     "geo_json_events": {
       "name": "GeoJSON",
       "integration_type": "service",
-      "config_flow": false,
+      "config_flow": true,
       "iot_class": "cloud_polling"
     },
     "geo_rss_events": {