Request and Response Body Size in ListView

Description

Add an option to display both the body size and request size in the header section of each entry in the ListView (the main request list screen). This would allow users to quickly view and compare the sizes of requests and responses directly from the list, without needing to inspect each one individually.

Why this feature/change is important?

Currently, to view the body size or request size, users need to click into each individual request. This can be time-consuming, especially when analyzing multiple requests or trying to quickly identify large payloads. By displaying these sizes in the ListView header, users can:
• Quickly spot large requests or responses
• Easily compare sizes across multiple requests
• Save time during analysis and troubleshooting

This small UI enhancement would significantly improve the workflow and efficiency for developers and testers who need to monitor and optimize network traffic.