Add new language keys and checkboxes for openrouter fallback and middle out

src/lang/en.ts

@@ -488,4 +488,6 @@ export const languageEnglish = {
     autoRemoveThoughtTag: "Remove Thought Tag",
     customChainOfThought: "Custom Chain of Thoughts",
     maxThoughtTagDepth: "Max Thought Tag Depth",
+    openrouterFallback: "Openrouter Fallback",
+    openrouterMiddleOut: "Openrouter Middle Out",
 }

src/lib/Setting/Pages/BotSettings.svelte

@@ -319,6 +319,12 @@
     <span class="text-textcolor">Top K</span>
     <SliderInput min={0} max={100} step={1} bind:value={$DataBase.top_k}/>
     <span class="text-textcolor2 mb-6 text-sm">{($DataBase.top_k).toFixed(0)}</span>
+    <div class="flex items-center mt-4">
+        <Check bind:check={$DataBase.openrouterFallback} name={language.openrouterFallback}/>
+    </div>
+    <div class="flex items-center mt-4">
+        <Check bind:check={$DataBase.openrouterMiddleOut} name={language.openrouterMiddleOut}/>
+    </div>
 {/if}
 
 {#if $DataBase.aiModel === 'textgen_webui' || $DataBase.aiModel === 'mancer' || $DataBase.aiModel.startsWith('local_')}