feat: roles system backend

internal/domain/role/roleRepositoryInterface.go

@@ -0,0 +1,10 @@
+package role
+
+type Repository interface {
+	List() ([]Role, error)
+	Get(id uint32) (Role, error)
+	GetByName(name string) (Role, error)
+	ListGrants(roleID uint32) ([]Grant, error)
+	Create(created Role) (Role, error)
+	Save(saved Role) (Role, error)
+}