Added health endpoint

Signed-off-by: Andriy Mulyar <andriy.mulyar@gmail.com>

gpt4all-api/gpt4all_api/app/api_v1/api.py

@@ -1,4 +1,4 @@
-from api_v1.routes import chat, completions, engines
+from api_v1.routes import chat, completions, engines, health
 from fastapi import APIRouter
 
 router = APIRouter()
@@ -6,3 +6,4 @@ router = APIRouter()
 router.include_router(chat.router)
 router.include_router(completions.router)
 router.include_router(engines.router)
+router.include_router(health.router)