feat: Initialize frontend and backend structure with essential configurations

- Added TypeScript build info for frontend.
- Created Vite configuration for React application.
- Implemented pre-commit hook to run checks before commits.
- Set up PostgreSQL Dockerfile with PostGIS support and initialization scripts.
- Added database creation script for PostgreSQL with necessary extensions.
- Established Python project configuration with dependencies and development tools.
- Developed pre-commit script to enforce code quality checks for backend and frontend.
- Created PowerShell script to set up Git hooks path.

backend/app/api/deps.py

@@ -0,0 +1,40 @@
+from __future__ import annotations
+
+from collections.abc import Generator
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from pydantic import ValidationError
+from sqlalchemy.orm import Session
+
+from backend.app.core.security import decode_access_token
+from backend.app.db.session import get_db_session
+from backend.app.models import TokenPayload, UserPublic
+from backend.app.services.auth import get_user, to_public_user
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="api/auth/login")
+
+
+async def get_current_user(token: str = Depends(oauth2_scheme)) -> UserPublic:
+    try:
+        payload = TokenPayload(**decode_access_token(token))
+    except (ValueError, ValidationError) as exc:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Could not validate credentials",
+            headers={"WWW-Authenticate": "Bearer"},
+        ) from exc
+
+    user = get_user(payload.sub)
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="User not found",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+
+    return to_public_user(user)
+
+
+def get_db() -> Generator[Session, None, None]:
+    yield from get_db_session()