chore: documentation (#76)

* chore: update docstring example to use python code block

* docs: add documentation

* feat: add docs build + fix other workdlows

* fix: add missing return type

docs/module/logger.md

@@ -0,0 +1,37 @@
+# Logger
+
+Lightweight logging utilities with consistent formatting and uvicorn integration.
+
+## Overview
+
+The `logger` module provides two helpers: one to configure the root logger (and uvicorn loggers) at startup, and one to retrieve a named logger anywhere in your codebase.
+
+## Setup
+
+Call [`configure_logging`](../reference/logger.md#fastapi_toolsets.logger.configure_logging) once at application startup:
+
+```python
+from fastapi_toolsets.logger import configure_logging
+
+configure_logging(level="INFO")
+```
+
+This sets up a stdout handler with a consistent format and also configures uvicorn's access and error loggers so all log output shares the same style.
+
+## Getting a logger
+
+```python
+from fastapi_toolsets.logger import get_logger
+
+logger = get_logger(name=__name__)
+logger.info("User created")
+```
+
+When called without arguments, [`get_logger`](../reference/logger.md#fastapi_toolsets.logger.get_logger) auto-detects the caller's module name via frame inspection:
+
+```python
+# Equivalent to get_logger(name=__name__)
+logger = get_logger()
+```
+
+[:material-api: API Reference](../reference/logger.md)