Global refactoring of the project to use poetry and implement tests,

fixing bugs, changing the handling of dto and db models, preparing to
add new functionality

library_service/routers/misc.py

@@ -0,0 +1,38 @@
+from fastapi import APIRouter, Request, FastAPI
+from fastapi.params import Depends
+from fastapi.responses import HTMLResponse, JSONResponse
+from fastapi.templating import Jinja2Templates
+from pathlib import Path
+from datetime import datetime
+from typing import Dict
+
+from httpx import get
+
+from library_service.settings import get_app
+
+# Templates initialization
+templates = Jinja2Templates(directory=Path(__file__).parent.parent / "templates")
+
+router = APIRouter(tags=["misc"])
+
+# Formatted information about the application
+def get_info(app) -> Dict:
+    return {
+            "status": "ok",
+            "app_info": {
+                "title": app.title,
+                "version": app.version,
+                "description": app.description,
+            },
+            "server_time": datetime.now().isoformat(),
+        }
+
+# Root endpoint
+@router.get("/", response_class=HTMLResponse)
+async def root(request: Request, app=Depends(get_app)):
+    return templates.TemplateResponse(request, "index.html", get_info(app))
+
+# API Information endpoint
+@router.get("/api/info")
+async def api_info(app=Depends(get_app)):
+    return JSONResponse(content=get_info(app))