Add experimental option to enable "packaged runtime" mode

src/p4/PackagerOptions.svelte

@@ -734,6 +734,12 @@
         <input type="text" bind:value={$options.projectId}>
       </label>
       <p>{$_('options.projectIdHelp')}</p>
+
+      <label class="option">
+        <input type="checkbox" bind:checked={$options.packagedRuntime} />
+        <!-- This option is temporary, so don't translate. -->
+        Use "packaged runtime" mode (experimental)
+      </label>
     </details>
   </div>
 </Section>

src/packager/packager.js

@@ -1194,6 +1194,7 @@ cd "$(dirname "$0")"
       scaffolding.height = ${this.options.stageHeight};
       scaffolding.resizeMode = ${JSON.stringify(this.options.resizeMode)};
       scaffolding.editableLists = ${this.options.monitors.editableLists};
+      scaffolding.usePackagedRuntime = ${this.options.packagedRuntime};
       scaffolding.setup();
       scaffolding.appendTo(appElement);
 
@@ -1526,6 +1527,7 @@ Packager.DEFAULT_OPTIONS = () => ({
     enabled: true,
     warpTimer: false
   },
+  packagedRuntime: false,
   target: 'html',
   app: {
     icon: null,