refactor: extract all routes to app/api/v1/endpoints/ with proper structure

app/models/auth.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+LogBoard+ - Модели аутентификации
+Автор: Сергей Антропов
+Сайт: https://devops.org.ru
+"""
+
+from typing import Optional
+from pydantic import BaseModel
+
+class UserLogin(BaseModel):
+    username: str
+    password: str
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+class TokenData(BaseModel):
+    username: Optional[str] = None