feat: invite user link (#8578)

# Which Problems Are Solved

As an administrator I want to be able to invite users to my application
with the API V2, some user data I will already prefil, the user should
add the authentication method themself (password, passkey, sso).

# How the Problems Are Solved

- A user can now be created with a email explicitly set to false.
- If a user has no verified email and no authentication method, an
`InviteCode` can be created through the User V2 API.
  - the code can be returned or sent through email
- additionally `URLTemplate` and an `ApplicatioName` can provided for
the email
- The code can be resent and verified through the User V2 API
- The V1 login allows users to verify and resend the code and set a
password (analog user initialization)
- The message text for the user invitation can be customized

# Additional Changes

- `verifyUserPasskeyCode` directly uses `crypto.VerifyCode` (instead of
`verifyEncryptedCode`)
- `verifyEncryptedCode` is removed (unnecessarily queried for the code
generator)

# Additional Context

- closes #8310
- TODO: login V2 will have to implement invite flow:
https://github.com/zitadel/typescript/issues/166

internal/command/user_v2_passkey.go

@@ -48,7 +48,7 @@ func (c *Commands) verifyUserPasskeyCode(ctx context.Context, userID, resourceOw
 	if err != nil {
 		return nil, err
 	}
-	err = verifyEncryptedCode(ctx, c.eventstore.Filter, domain.SecretGeneratorTypePasswordlessInitCode, alg, wm.ChangeDate, wm.Expiration, wm.CryptoCode, code) //nolint:staticcheck
+	err = crypto.VerifyCode(wm.ChangeDate, wm.Expiration, wm.CryptoCode, code, alg)
 	if err != nil || wm.State != domain.PasswordlessInitCodeStateActive {
 		c.verifyUserPasskeyCodeFailed(ctx, wm)
 		return nil, zerrors.ThrowInvalidArgument(err, "COMMAND-Eeb2a", "Errors.User.Code.Invalid")