feat: add model serving resource

* add model serving

* add right provider config

* rename model_serving to modelserving

* add model serving custom endpoint everywhere

* rename file

* add default region, docs for model serving

* add right order of wait handler

* rotate after to token

* fixes

* add initial doc files

* address code comments

* refactor region description

* remove warning for not found resources

* add service enablement

* address code comments

* address code comments

* fix datasource

* fix acc test

* review changes

* review changes

* review changes

* review changes

* review changes

* review changes

* review changes

* review changes

* review changes

* embed markdown description

* go tidy

---------

Co-authored-by: Mauritz Uphoff <mauritz.uphoff@me.com>
Co-authored-by: Mauritz Uphoff <39736813+h3adex@users.noreply.github.com>

docs/index.md

@@ -162,6 +162,7 @@ Note: AWS specific checks must be skipped as they do not work on STACKIT. For de
 - `loadbalancer_custom_endpoint` (String) Custom endpoint for the Load Balancer service
 - `logme_custom_endpoint` (String) Custom endpoint for the LogMe service
 - `mariadb_custom_endpoint` (String) Custom endpoint for the MariaDB service
+- `modelserving_custom_endpoint` (String) Custom endpoint for the Model Serving service
 - `mongodbflex_custom_endpoint` (String) Custom endpoint for the MongoDB Flex service
 - `objectstorage_custom_endpoint` (String) Custom endpoint for the Object Storage service
 - `observability_custom_endpoint` (String) Custom endpoint for the Observability service

docs/resources/modelserving_token.md

@@ -0,0 +1,71 @@
+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "stackit_modelserving_token Resource - stackit"
+subcategory: ""
+description: |-
+  Model Serving Auth Token Resource schema.
+  Example Usage
+  Automatically rotate model serving token
+  
+  resource "time_rotating" "rotate" {
+      rotation_days = 80
+  }
+  
+  resource "stackit_modelserving_token" "example" {
+      project_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+      name       = "Example token"
+      
+      rotate_when_changed = {
+          rotation = time_rotating.rotate.id
+      }
+  
+  }
+---
+
+# stackit_modelserving_token (Resource)
+
+Model Serving Auth Token Resource schema.
+
+## Example Usage
+
+### Automatically rotate model serving token
+```terraform
+resource "time_rotating" "rotate" {
+    rotation_days = 80
+}
+
+resource "stackit_modelserving_token" "example" {
+    project_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+    name       = "Example token"
+    
+    rotate_when_changed = {
+        rotation = time_rotating.rotate.id
+    }
+
+}
+```
+
+
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `name` (String) Name of the model serving auth token.
+- `project_id` (String) STACKIT project ID to which the model serving auth token is associated.
+
+### Optional
+
+- `description` (String) The description of the model serving auth token.
+- `region` (String) Region to which the model serving auth token is associated. If not defined, the provider region is used
+- `rotate_when_changed` (Map of String) A map of arbitrary key/value pairs that will force recreation of the token when they change, enabling token rotation based on external conditions such as a rotating timestamp. Changing this forces a new resource to be created.
+- `ttl_duration` (String) The TTL duration of the model serving auth token. E.g. 5h30m40s,5h,5h30m,30m,30s
+
+### Read-Only
+
+- `id` (String) Terraform's internal data source. ID. It is structured as "`project_id`,`region`,`token_id`".
+- `state` (String) State of the model serving auth token.
+- `token` (String, Sensitive) Content of the model serving auth token.
+- `token_id` (String) The model serving auth token ID.
+- `valid_until` (String) The time until the model serving auth token is valid.