feat: Instance create (#4502)

* feat(instance): implement create instance with direct machine user and credentials

* fix: deprecated add endpoint and variable declaration

* fix(instance): update logic for pats and machinekeys

* fix(instance): unit test corrections and additional unit test for pats and machinekeys

* fix(instance-create): include review changes

* fix(instance-create): linter fixes

* move iframe usage to solution scenarios configurations

* Revert "move iframe usage to solution scenarios configurations"

This reverts commit 9db31f3808.

* fix merge

* fix: add review suggestions

Co-authored-by: Livio Spring <livio.a@gmail.com>

* fix: add review changes

* fix: add review changes for default definitions

* fix: add review changes for machinekey details

* fix: add machinekey output when setup with machineuser

* fix: add changes from review

* fix instance converter for machine and allow overwriting of further machine fields

Co-authored-by: Livio Spring <livio.a@gmail.com>

cmd/setup/steps.yaml

@@ -1,4 +1,5 @@
 FirstInstance:
+  MachineKeyPath:
   InstanceName: ZITADEL
   DefaultLanguage: en
   Org:
@@ -22,3 +23,10 @@ FirstInstance:
         Verified:
       Password: Password1!
       PasswordChangeRequired: true
+    Machine:
+      Machine:
+        Username:
+        Name:
+      MachineKey:
+        ExpirationDate:
+        Type: