update template

template/externs/webextension_polyfill/normandyaddonstudy/Static.hx

@@ -0,0 +1,20 @@
+package webextension_polyfill.normandyaddonstudy;
+
+typedef Static = {
+	/**
+		Returns a study object for the current study.
+	**/
+	function getStudy():Void;
+	/**
+		Marks the study as ended and then uninstalls the addon.
+	**/
+	function endStudy(reason:String):Void;
+	/**
+		Returns an object with metadata about the client which may be required for constructing survey URLs.
+	**/
+	function getClientMetadata():Void;
+	/**
+		Fired when a user unenrolls from a study but before the addon is uninstalled.
+	**/
+	var onUnenroll : webextension_polyfill.events.Event<(reason:String) -> Void>;
+};