Placeholder Forge source editor

vweb/src/forge_editor.jsx

@@ -0,0 +1,7 @@
+import './snippet_emulator.css'
+import React, {useCallback, useState} from 'react'
+
+export default function ForgeEditor({ src, updateSrc }) {
+    const onChangeSrc = useCallback((e) => { updateSrc(e.target.value) }, [updateSrc])
+    return <textarea value={src} onChange={onChangeSrc}></textarea>
+}