feat(api): feature flags (#7356)

* feat(api): feature API proto definitions

* update proto based on discussion with @livio-a

* cleanup old feature flag stuff

* authz instance queries

* align defaults

* projection definitions

* define commands and event reducers

* implement system and instance setter APIs

* api getter implementation

* unit test repository package

* command unit tests

* unit test Get queries

* grpc converter unit tests

* migrate the V1 features

* migrate oidc to dynamic features

* projection unit test

* fix instance by host

* fix instance by id data type in sql

* fix linting errors

* add system projection test

* fix behavior inversion

* resolve proto file comments

* rename SystemDefaultLoginInstanceEventType to SystemLoginDefaultOrgEventType so it's consistent with the instance level event

* use write models and conditional set events

* system features integration tests

* instance features integration tests

* error on empty request

* documentation entry

* typo in feature.proto

* fix start unit tests

* solve linting error on key case switch

* remove system defaults after discussion with @eliobischof

* fix system feature projection

* resolve comments in defaults.yaml

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

internal/auth/repository/eventsourcing/repository.go

@@ -3,7 +3,6 @@ package eventsourcing
 import (
 	"context"
 
-	"github.com/zitadel/zitadel/feature"
 	"github.com/zitadel/zitadel/internal/auth/repository/eventsourcing/eventstore"
 	auth_handler "github.com/zitadel/zitadel/internal/auth/repository/eventsourcing/handler"
 	auth_view "github.com/zitadel/zitadel/internal/auth/repository/eventsourcing/view"
@@ -77,7 +76,6 @@ func Start(ctx context.Context, conf Config, systemDefaults sd.SystemDefaults, c
 			ProjectProvider:           queryView,
 			ApplicationProvider:       queries,
 			CustomTextProvider:        queries,
-			FeatureCheck:              feature.NewCheck(esV2),
 			IdGenerator:               id.SonyFlakeGenerator(),
 		},
 		eventstore.TokenRepo{