feat: support hyperscript

Support hyperscript by allowing _ in the HtmlBodyTag

Author: suckrowPierre

src/jsx/events.d.ts

@@ -19,6 +19,7 @@ declare namespace JSX {
         onstorage?: string;
         onundo?: string;
         onunload?: string;
+        _?: string;
     }
     interface HtmlTag {
         oncontextmenu?: string;