Text Generation: Add TabbyAPI support

TabbyAPI is an exllamav2 only API server that aims to provide a simple
experience for loading and chatting with exl2 models.

SillyTavern currently doesn't have the ability to load and unload models,
so only add the OAI compatible completion endpoints.

The repository can be found here:
https://github.com/theroyallab/tabbyAPI

Signed-off-by: kingbri <bdashore3@proton.me>

public/scripts/secrets.js

@@ -4,6 +4,7 @@ export const SECRET_KEYS = {
     HORDE: 'api_key_horde',
     MANCER: 'api_key_mancer',
     APHRODITE: 'api_key_aphrodite',
+    TABBY: 'api_key_tabby',
     OPENAI: 'api_key_openai',
     NOVEL: 'api_key_novel',
     CLAUDE: 'api_key_claude',
@@ -27,6 +28,7 @@ const INPUT_MAP = {
     [SECRET_KEYS.SCALE_COOKIE]: '#scale_cookie',
     [SECRET_KEYS.PALM]: '#api_key_palm',
     [SECRET_KEYS.APHRODITE]: '#api_key_aphrodite',
+    [SECRET_KEYS.TABBY]: '#api_key_tabby'
 }
 
 async function clearSecret() {