feat: Initialize FastAPI application with Azure authentication and transaction management

- Added .env.example for environment variable configuration.
- Created app initialization files and core settings management.
- Implemented API routers for reporting and transaction endpoints.
- Developed transaction management service with CRUD operations.
- Integrated Azure OAuth for user authentication.
- Designed dashboard view with transaction filtering and display.
- Added Swagger UI documentation with custom dark theme.
- Created static and template files for frontend styling and layout.

pyproject.toml

@@ -5,7 +5,12 @@ description = "Add your description here"
 readme = "README.md"
 requires-python = ">=3.13"
 dependencies = [
+    "authlib>=1.7.2",
     "fastapi>=0.136.0",
+    "httpx>=0.28.1",
+    "itsdangerous>=2.2.0",
+    "jinja2>=3.1.6",
     "pydantic>=2.13.3",
+    "python-dotenv>=1.2.2",
     "uvicorn[standard]>=0.45.0",
 ]