feat: e-mail templates (#1158)

* View definition added

* Get templates and texts from the database.

* Fill in texts in templates

* Fill in texts in templates

* Client API added

* Weekly backup

* Weekly backup

* Daily backup

* Weekly backup

* Tests added

* Corrections from merge branch

* Fixes from pull request review

internal/project/model/project_role_view.go

@@ -1,8 +1,9 @@
 package model
 
 import (
-	"github.com/caos/zitadel/internal/model"
 	"time"
+
+	"github.com/caos/zitadel/internal/model"
 )
 
 type ProjectRoleView struct {
@@ -13,6 +14,7 @@ type ProjectRoleView struct {
 	DisplayName   string
 	Group         string
 	CreationDate  time.Time
+	ChangeDate    time.Time
 	Sequence      uint64
 }