update template

template/externs/webextension_polyfill/manifest/ProtocolHandler.hx

@@ -0,0 +1,22 @@
+package webextension_polyfill.manifest;
+
+/**
+	Represents a protocol handler definition.
+**/
+typedef ProtocolHandler = {
+	/**
+		A user-readable title string for the protocol handler. This will be displayed to the user in interface objects as needed.
+	**/
+	var name : String;
+	/**
+		The protocol the site wishes to handle, specified as a string. For example, you can register to handle SMS text message
+		links by registering to handle the "sms" scheme.
+	**/
+	var protocol : String;
+	/**
+		The URL of the handler, as a string. This string should include "%s" as a placeholder which will be replaced with the
+		escaped URL of the document to be handled. This URL might be a true URL, or it could be a phone number, email address,
+		or so forth.
+	**/
+	var uriTemplate : String;
+};