fix(debug): Save all state to localStorage, not just G and ctx (#716)

* Save all state to localStorage, not just G and ctx

* Don’t store deltalog, _undo & _redo in debug panel

Co-authored-by: Chris Swithinbank <[email protected]>

Author: SmileyJames

src/client/debug/main/Controls.svelte

@@ -6,8 +6,9 @@
   import { parse, stringify } from 'flatted';
 
   function Save() {
-    const { G, ctx } = client.getState();
-    const json = stringify({ G, ctx });
+    // strip deltalog, _undo, and _redo from state to persist
+    const { deltalog, _undo, _redo, ...state } = client.getState();
+    const json = stringify(state);
     window.localStorage.setItem('gamestate', json);
   }