feat: enhance project configuration and improve data export functionality

- Updated `.gitignore` to streamline ignored files and added logging for common sites.
- Expanded `config.py` with new configurations for Weixin and Redis, and improved database connection settings.
- Refined `README.md` to clarify project structure and usage instructions.
- Enhanced `requirements.txt` with additional dependencies for MongoDB and Redis support.
- Refactored multiple spider scripts to utilize a session-based approach for HTTP requests, improving error handling and proxy management.
- Updated `export_lawyers_excel.py` to include a default timestamp for data exports.

request/__init__.py

@@ -1,19 +1 @@
-from request.requests_client import (
-    RequestClientError,
-    RequestConnectTimeout,
-    RequestConnectionError,
-    RequestSSLError,
-    RequestTimeout,
-    RequestsClient,
-    ResponseData,
-)
-
-__all__ = [
-    "RequestsClient",
-    "ResponseData",
-    "RequestClientError",
-    "RequestConnectTimeout",
-    "RequestTimeout",
-    "RequestConnectionError",
-    "RequestSSLError",
-]
+# Package marker for request utilities.