Support ability to create "non-custom" services (#6604) (#12796)

* Support ability to create "non-custom" services

Allow users to create various Service Monitoring services: App Engine,
Cloud Run, etc.

#11935

* Specify BasicService is immutable

* Responding to review comments.

* Add test; make service_id required

* labels still need input: true; remove encoder

* Correct typo

* Ignore service fields in SLO import test

* Correct test

* Make id_format and import_format the same

* Remove custom code

* Correct test typo

* service is actually input-only

* Add resource test

Signed-off-by: Modular Magician <magic-modules@google.com>

Signed-off-by: Modular Magician <magic-modules@google.com>

.changelog/6604.txt

@@ -0,0 +1,3 @@
+```release-note:new-resource
+google_monitoring_generic_service
+```

google/provider.go

@@ -900,9 +900,9 @@ func Provider() *schema.Provider {
 	return provider
 }
 
-// Generated resources: 236
+// Generated resources: 237
 // Generated IAM resources: 138
-// Total generated resources: 374
+// Total generated resources: 375
 func ResourceMap() map[string]*schema.Resource {
 	resourceMap, _ := ResourceMapWithErrors()
 	return resourceMap
@@ -1196,6 +1196,7 @@ func ResourceMapWithErrors() (map[string]*schema.Resource, error) {
 			"google_monitoring_group":                                      resourceMonitoringGroup(),
 			"google_monitoring_notification_channel":                       resourceMonitoringNotificationChannel(),
 			"google_monitoring_custom_service":                             resourceMonitoringService(),
+			"google_monitoring_service":                                    resourceMonitoringGenericService(),
 			"google_monitoring_slo":                                        resourceMonitoringSlo(),
 			"google_monitoring_uptime_check_config":                        resourceMonitoringUptimeCheckConfig(),
 			"google_monitoring_metric_descriptor":                          resourceMonitoringMetricDescriptor(),