add support for pinning mfs

Author: aschmahmann

remotepin.go

@@ -12,10 +12,16 @@ type Pinning struct {
 }
 
 type RemotePinningService struct {
-	Api RemotePinningServiceApi
+	Api      RemotePinningServiceApi
+	Policies RemotePinningServicePolicies
 }
 
 type RemotePinningServiceApi struct {
 	ApiEndpoint string
 	ApiKey      string
 }
+
+type RemotePinningServicePolicies struct {
+	// PinMFS enables watching for changes in MFS and re-pinning the MFS root cid whenever a change occurs.
+	PinMFS *bool
+}