feat: auto generated files and new structure (#4)

## Description

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At least please give us some description what you are trying to achieve and why your change is needed. -->

relates to #1234

## Checklist

- [ ] Issue was linked above
- [ ] Code format was applied: `make fmt`
- [ ] Examples were added / adjusted (see `examples/` directory)
- [x] Docs are up-to-date: `make generate-docs` (will be checked by CI)
- [ ] Unit tests got implemented or updated
- [ ] Acceptance tests got implemented or updated (see e.g. [here](f5f99d1709/stackit/internal/services/dns/dns_acc_test.go))
- [x] Unit tests are passing: `make test` (will be checked by CI)
- [x] No linter issues: `make lint` (will be checked by CI)

Reviewed-on: #4
Reviewed-by: Andre_Harms <andre.harms@stackit.cloud>
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>
Co-committed-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

docs/resources/sqlserverflexalpha_instance.md

@@ -41,7 +41,6 @@ import {
 
 ### Required
 
-- `encryption` (Attributes) The encryption block. (see [below for nested schema](#nestedatt--encryption))
 - `flavor_id` (String)
 - `name` (String) Instance name.
 - `network` (Attributes) The network block. (see [below for nested schema](#nestedatt--network))
@@ -50,6 +49,7 @@ import {
 ### Optional
 
 - `backup_schedule` (String) The backup schedule. Should follow the cron scheduling system format (e.g. "0 0 * * *")
+- `encryption` (Attributes) The encryption block. (see [below for nested schema](#nestedatt--encryption))
 - `is_deletable` (Boolean)
 - `region` (String) The resource region. If not defined, the provider region is used.
 - `retention_days` (Number)
@@ -64,17 +64,6 @@ import {
 - `instance_id` (String) ID of the SQLServer Flex instance.
 - `replicas` (Number)
 
-<a id="nestedatt--encryption"></a>
-### Nested Schema for `encryption`
-
-Required:
-
-- `key_id` (String) STACKIT KMS - Key ID of the encryption key to use.
-- `key_version` (String) STACKIT KMS - Key version to use in the encryption key.
-- `keyring_id` (String) STACKIT KMS - KeyRing ID of the encryption key to use.
-- `service_account` (String)
-
-
 <a id="nestedatt--network"></a>
 ### Nested Schema for `network`
 
@@ -89,6 +78,17 @@ Read-Only:
 - `router_address` (String) The returned router IP address of the SQLServer Flex instance.
 
 
+<a id="nestedatt--encryption"></a>
+### Nested Schema for `encryption`
+
+Required:
+
+- `key_id` (String) STACKIT KMS - Key ID of the encryption key to use.
+- `key_version` (String) STACKIT KMS - Key version to use in the encryption key.
+- `keyring_id` (String) STACKIT KMS - KeyRing ID of the encryption key to use.
+- `service_account` (String)
+
+
 <a id="nestedatt--storage"></a>
 ### Nested Schema for `storage`