get frontend code generating and usable

cmd/cli/templates/proto/include/google/api/serviceconfig.yaml

@@ -0,0 +1,26 @@
+type: google.api.Service
+config_version: 3
+name: serviceconfig.googleapis.com
+title: Service Config API
+
+types:
+- name: google.api.ConfigChange
+- name: google.api.Distribution
+- name: google.api.DocumentationRule
+- name: google.api.HttpBody
+- name: google.api.LabelDescriptor
+- name: google.api.Metric
+- name: google.api.MonitoredResource
+- name: google.api.MonitoredResourceDescriptor
+- name: google.api.MonitoredResourceMetadata
+- name: google.api.ResourceDescriptor
+- name: google.api.ResourceReference
+- name: google.api.Service
+- name: google.api.Visibility
+
+enums:
+- name: google.api.ErrorReason
+- name: google.api.FieldBehavior
+
+documentation:
+  summary: Lets you define and config your API service.