New report router and user reporting refactoring (#25713)

* Added materialized view migration

* Renamed mat view

* Added channel membership mat view and indexes

* Added channel membership mat view and indexes

* Added new index

* WIP

* Simplifying user reporting code

* Created app and API layer for cahnnel reporting, reporting refactoring in general

* New router

* Remobved channel reporting meanwhile

* Upodated autogenerated stuff

* Lint fix

* Fixed typo

* api vet

* i18n fix

* Fixed API vetting and removed channel reporting constants

* yaml

* removed app pagination tests

api/Makefile

@@ -50,6 +50,7 @@ build-v4: node_modules playbooks
 	@cat $(V4_SRC)/imports.yaml >> $(V4_YAML)
 	@cat $(V4_SRC)/exports.yaml >> $(V4_YAML)
 	@cat $(V4_SRC)/ip_filters.yaml >> $(V4_YAML)
+	@cat $(V4_SRC)/reports.yaml >> $(V4_YAML)
 	@if [ -r $(PLAYBOOKS_SRC)/paths.yaml ]; then cat $(PLAYBOOKS_SRC)/paths.yaml >> $(V4_YAML); fi
 	@if [ -r $(PLAYBOOKS_SRC)/merged-definitions.yaml ]; then cat $(PLAYBOOKS_SRC)/merged-definitions.yaml >> $(V4_YAML); else cat $(V4_SRC)/definitions.yaml >> $(V4_YAML); fi
 	@echo Extracting code samples