feat: Iam projection (#3074)

* feat: implement projection for iam and clean up code

* feat: add migration

* fix: remove unused tests

* fix: handler

internal/authz/repository/eventsourcing/eventstore/iam.go

@@ -1,22 +0,0 @@
-package eventstore
-
-import (
-	"context"
-	"github.com/caos/zitadel/internal/query"
-
-	"github.com/caos/zitadel/internal/iam/model"
-)
-
-type IamRepo struct {
-	IAMID string
-
-	IAMV2Query *query.Queries
-}
-
-func (repo *IamRepo) Health(ctx context.Context) error {
-	return nil
-}
-
-func (repo *IamRepo) IamByID(ctx context.Context) (*model.IAM, error) {
-	return repo.IAMV2Query.IAMByID(ctx, repo.IAMID)
-}