fix(projections): login names projection (#2698)

* refactor(domain): add user type

* fix(projections): start with login names

* fix(login_policy): correct handling of user domain claimed event

* refactor: login name projection

* fix: set correct suffixes on login name projections

* test(projections): login name reduces

* migration versioning

* refactor: use const for login name table name

internal/domain/user.go

@@ -26,3 +26,16 @@ func (f UserState) Valid() bool {
 func (s UserState) Exists() bool {
 	return s != UserStateUnspecified && s != UserStateDeleted
 }
+
+type UserType int32
+
+const (
+	UserTypeUnspecified UserType = iota
+	UserTypeHuman
+	UserTypeMachine
+	userTypeCount
+)
+
+func (f UserType) Valid() bool {
+	return f >= 0 && f < userTypeCount
+}