feat(setup): T03 create requirements.txt with dependencies

- Add requirements.txt with all core dependencies:
  - FastAPI 0.104.1, uvicorn 0.24.0
  - SQLAlchemy 2.0.23, Alembic 1.12.1
  - Pydantic 2.5.0, pydantic-settings 2.1.0
  - python-jose 3.3.0, passlib 1.7.4, cryptography 41.0.7
  - httpx 0.25.2, pytest 7.4.3, pytest-asyncio 0.21.1, pytest-cov 4.1.0
- Add test_requirements.py with 15 unit tests
- All tests passing (15/15)

Refs: T03

export/progress.md

@@ -9,11 +9,11 @@
 | Metrica | Valore |
 |---------|--------|
 | **Stato** | 🟡 In Progress |
-| **Progresso** | 3% |
+| **Progresso** | 4% |
 | **Data Inizio** | 2024-04-07 |
 | **Data Target** | TBD |
 | **Task Totali** | 74 |
-| **Task Completati** | 2 |
+| **Task Completati** | 3 |
 | **Task In Progress** | 1 |
 
 ---
@@ -37,10 +37,10 @@
 
 ## 📋 Task Pianificate
 
-### 🔧 Setup Progetto (T01-T05) - 2/5 completati
+### 🔧 Setup Progetto (T01-T05) - 3/5 completati
 - [x] T01: Creare struttura cartelle progetto (2024-04-07)
 - [x] T02: Inizializzare virtual environment e .gitignore (2024-04-07)
-- [ ] T03: Creare requirements.txt con dipendenze
+- [x] T03: Creare requirements.txt con dipendenze (2024-04-07)
 - [ ] T04: Setup file configurazione (.env, config.py)
 - [ ] T05: Configurare pytest e struttura test