Add Xiaomi MiMo provider support

- Introduced Xiaomi MiMo as a new provider in providerModels.js and providers.js.
- Updated model alias mapping in model.js to include Xiaomi MiMo.
- Enhanced validation route to support Xiaomi MiMo API endpoints.
- Added Xiaomi MiMo to APIKEY_PROVIDERS with relevant details.

This update expands the range of supported providers, improving integration capabilities.

src/app/api/providers/validate/route.js

@@ -361,6 +361,7 @@ export async function POST(request) {
         case "assemblyai":
         case "nanobanana":
         case "chutes":
+        case "xiaomi-mimo":
         case "nvidia": {
           const endpoints = {
             deepseek: "https://api.deepseek.com/models",
@@ -380,7 +381,8 @@ export async function POST(request) {
             assemblyai: "https://api.assemblyai.com/v1/account",
             nanobanana: "https://api.nanobananaapi.ai/v1/models",
             chutes: "https://llm.chutes.ai/v1/models",
-            nvidia: "https://integrate.api.nvidia.com/v1/models"
+            nvidia: "https://integrate.api.nvidia.com/v1/models",
+            "xiaomi-mimo": "https://api.xiaomimimo.com/v1/models"
           };
           const headers = {};
           if (apiKey) headers["Authorization"] = `Bearer ${apiKey}`;