[Internal] Load auto-generated resources and data sources (#4367)

## Changes
<!-- Summary of your changes that are easy to understand -->
This PR adds a placeholder file that will load any future auto-generated
resources and data sources. The file itself will be auto-generated along
with the resources and data sources.

## Tests
<!-- 
How is this tested? Please see the checklist below and also describe any
other relevant tests
-->

- [ ] `make test` run locally
- [ ] relevant change in `docs/` folder
- [ ] covered with integration tests in `internal/acceptance`
- [ ] using Go SDK
- [ ] using TF Plugin Framework

Co-authored-by: Omer Lachish <[email protected]>

internal/providers/pluginfw/pluginfw_rollout_utils.go

@@ -41,26 +41,32 @@ var migratedDataSources = []func() datasource.DataSource{
 
 // List of resources that have been onboarded to the plugin framework - not migrated from sdkv2.
 // Keep this list sorted.
-var pluginFwOnlyResources = []func() resource.Resource{
-	app.ResourceApp,
-	sharing.ResourceShare,
-}
+var pluginFwOnlyResources = append(
+	[]func() resource.Resource{
+		app.ResourceApp,
+		sharing.ResourceShare,
+	},
+	autoGeneratedResources...,
+)
 
 // List of data sources that have been onboarded to the plugin framework - not migrated from sdkv2.
 // Keep this list sorted.
-var pluginFwOnlyDataSources = []func() datasource.DataSource{
-	app.DataSourceApp,
-	app.DataSourceApps,
-	catalog.DataSourceFunctions,
-	notificationdestinations.DataSourceNotificationDestinations,
-	registered_model.DataSourceRegisteredModel,
-	registered_model.DataSourceRegisteredModelVersions,
-	serving.DataSourceServingEndpoints,
-	// TODO: Add DataSourceCluster into migratedDataSources after fixing unit tests.
-	cluster.DataSourceCluster, // Using the staging name (with pluginframework suffix)
-	sharing.DataSourceShare,   // Using the staging name (with pluginframework suffix)
-	sharing.DataSourceShares,  // Using the staging name (with pluginframework suffix)
-}
+var pluginFwOnlyDataSources = append(
+	[]func() datasource.DataSource{
+		app.DataSourceApp,
+		app.DataSourceApps,
+		catalog.DataSourceFunctions,
+		notificationdestinations.DataSourceNotificationDestinations,
+		registered_model.DataSourceRegisteredModel,
+		registered_model.DataSourceRegisteredModelVersions,
+		serving.DataSourceServingEndpoints,
+		// TODO: Add DataSourceCluster into migratedDataSources after fixing unit tests.
+		cluster.DataSourceCluster, // Using the staging name (with pluginframework suffix)
+		sharing.DataSourceShare,   // Using the staging name (with pluginframework suffix)
+		sharing.DataSourceShares,  // Using the staging name (with pluginframework suffix)
+	},
+	autoGeneratedDataSources...,
+)
 
 type sdkV2FallbackOptions struct {
 	resourceFallbacks   []string