feat: user v2alpha email API (#5708)

* chore(proto): update versions

* change protoc plugin

* some cleanups

* define api for setting emails in new api

* implement user.SetEmail

* move SetEmail buisiness logic into command

* resuse newCryptoCode

* command: add ChangeEmail unit tests

Not complete, was not able to mock the generator.

* Revert "resuse newCryptoCode"

This reverts commit c89e90ae35.

* undo change to crypto code generators

* command: use a generator so we can test properly

* command: reorganise ChangeEmail

improve test coverage

* implement VerifyEmail

including unit tests

* add URL template tests

* proto: change context to object

* remove old auth option

* remove old auth option

* fix linting errors

run gci on modified files

* add permission checks and fix some errors

* comments

* comments

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>
Co-authored-by: Tim Möhlmann <tim+github@zitadel.com>

internal/notification/handlers/usernotifier.go

@@ -182,6 +182,10 @@ func (u *userNotifier) reduceEmailCodeAdded(event eventstore.Event) (*handler.St
 	if !ok {
 		return nil, errors.ThrowInvalidArgumentf(nil, "HANDL-SWf3g", "reduce.wrong.event.type %s", user.HumanEmailCodeAddedType)
 	}
+	if e.CodeReturned {
+		return crdb.NewNoOpStatement(e), nil
+	}
+
 	ctx := HandlerContext(event.Aggregate())
 	alreadyHandled, err := u.checkIfCodeAlreadyHandledOrExpired(ctx, event, e.Expiry, nil,
 		user.UserV1EmailCodeAddedType, user.UserV1EmailCodeSentType,
@@ -232,7 +236,7 @@ func (u *userNotifier) reduceEmailCodeAdded(event eventstore.Event) (*handler.St
 		e,
 		u.metricSuccessfulDeliveriesEmail,
 		u.metricFailedDeliveriesEmail,
-	).SendEmailVerificationCode(notifyUser, origin, code)
+	).SendEmailVerificationCode(notifyUser, origin, code, e.URLTemplate)
 	if err != nil {
 		return nil, err
 	}