fix: correct oidcsettings management (#4413)

* fix(oidcsettings): corrected projection, unittests and added the add endpoint

* fix(oidcsettings): corrected default handling and instance setup

* fix: set oidc settings correctly in console

* cleanup

* e2e test

* improve e2e test

* lint e2e

Co-authored-by: Livio Spring <livio.a@gmail.com>
Co-authored-by: Fabi <38692350+hifabienne@users.noreply.github.com>

docs/docs/apis/proto/admin.md

@@ -284,6 +284,18 @@ Get OIDC settings (e.g token lifetimes, etc.)
     GET: /settings/oidc
 
 
+### AddOIDCSettings
+
+> **rpc** AddOIDCSettings([AddOIDCSettingsRequest](#addoidcsettingsrequest))
+[AddOIDCSettingsResponse](#addoidcsettingsresponse)
+
+Add oidc settings (e.g token lifetimes, etc)
+
+
+
+    POST: /settings/oidc
+
+
 ### UpdateOIDCSettings
 
 > **rpc** UpdateOIDCSettings([UpdateOIDCSettingsRequest](#updateoidcsettingsrequest))
@@ -1739,6 +1751,31 @@ This is an empty request
 
 
 
+### AddOIDCSettingsRequest
+
+
+
+| Field | Type | Description | Validation |
+| ----- | ---- | ----------- | ----------- |
+| access_token_lifetime |  google.protobuf.Duration | - |  |
+| id_token_lifetime |  google.protobuf.Duration | - |  |
+| refresh_token_idle_expiration |  google.protobuf.Duration | - |  |
+| refresh_token_expiration |  google.protobuf.Duration | - |  |
+
+
+
+
+### AddOIDCSettingsResponse
+
+
+
+| Field | Type | Description | Validation |
+| ----- | ---- | ----------- | ----------- |
+| details |  zitadel.v1.ObjectDetails | - |  |
+
+
+
+
 ### AddSMSProviderTwilioRequest