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/command/user_human_email.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/zitadel/logging"
+
 	"github.com/zitadel/zitadel/internal/crypto"
 	"github.com/zitadel/zitadel/internal/domain"
 	caos_errs "github.com/zitadel/zitadel/internal/errors"
@@ -41,7 +42,7 @@ func (c *Commands) ChangeHumanEmail(ctx context.Context, email *domain.Email, em
 	if email.IsEmailVerified {
 		events = append(events, user.NewHumanEmailVerifiedEvent(ctx, userAgg))
 	} else {
-		emailCode, err := domain.NewEmailCode(emailCodeGenerator)
+		emailCode, _, err := domain.NewEmailCode(emailCodeGenerator)
 		if err != nil {
 			return nil, err
 		}
@@ -113,7 +114,7 @@ func (c *Commands) CreateHumanEmailVerificationCode(ctx context.Context, userID,
 		return nil, caos_errs.ThrowPreconditionFailed(nil, "COMMAND-3M9ds", "Errors.User.Email.AlreadyVerified")
 	}
 	userAgg := UserAggregateFromWriteModel(&existingEmail.WriteModel)
-	emailCode, err := domain.NewEmailCode(emailCodeGenerator)
+	emailCode, _, err := domain.NewEmailCode(emailCodeGenerator)
 	if err != nil {
 		return nil, err
 	}