Add title to type, add to model too

src/lib/Chat.svelte

@@ -37,6 +37,7 @@
     key: 'model',
     name: 'Model',
     default: 'gpt-3.5-turbo',
+    title: 'The model to use - GPT-3.5 is cheaper, but GPT-4 is more powerful.',
     options: supportedModels,
     type: 'select'
   }
@@ -559,7 +560,7 @@
                 />
               {:else if setting.type === 'select'}
                 <div class="select">
-                  <select id="settings-{setting.key}">
+                  <select id="settings-{setting.key}" title="{setting.title}">
                     {#each setting.options as option}
                       <option value={option} selected={option === setting.default}>{option}</option>
                     {/each}

src/lib/Types.svelte

@@ -60,6 +60,7 @@
   export type Settings = {
     key: string;
     name: string;
+    title: string;
   } & (SettingsNumber | SettingsSelect);
 
   type ResponseOK = {