Support using the custom video serving endpoint even if you don't use object storage (#2924)

* feat(video): refactor video serving endpoint

It can now be used without an object storage provider. Closes #2785

* fix: remove debug log

core/data/config.go

@@ -70,6 +70,7 @@ const (
 	customColorVariableValuesKey         = "custom_color_variable_values"
 	streamKeysKey                        = "stream_keys"
 	disableSearchIndexingKey             = "disable_search_indexing"
+	videoServingEndpointKey              = "video_serving_endpoint"
 )
 
 // GetExtraPageBodyContent will return the user-supplied body content.
@@ -974,3 +975,14 @@ func GetDisableSearchIndexing() bool {
 	}
 	return disableSearchIndexing
 }
+
+// GetVideoServingEndpoint returns the custom video endpont.
+func GetVideoServingEndpoint() string {
+	message, _ := _datastore.GetString(videoServingEndpointKey)
+	return message
+}
+
+// SetVideoServingEndpoint sets the custom video endpoint.
+func SetVideoServingEndpoint(message string) error {
+	return _datastore.SetString(videoServingEndpointKey, message)
+}