Improve ProxymanCore with gzip encoding/decoding

[NghiaTranUIT]

🐶 Brief

We shouldn't remove accept-encoding from Proxyman -> Server. We should keep it then decoding gzip when receiving data from server.

Therefore, we can get the uncompress body size, and compress body size. As well as increase the performance of Proxyman

Ref: https://github.com/nicklockwood/GZIP

👑 Criteria

• Keep the accept-encoding in header from Proxyman -> Server
• Detect encoding type and decompress if possible
• Able to see gzip content properly

[NghiaTranUIT]

All done 💯

🤯 Changelogs

• Support gzip, deflate, br decoding
• Send Accept-Encoding from Proxyman -> Server
• Decode encoded data appropriately
• Able to see all old response before

[david-ortegon-meli]

After this change. Where can I see the compressed size vs the decompressed size in Proxyman?

[NghiaTranUIT]

@david-ortegon-meli You have two ways to show this data:

1. From the Summary Tab
   

2. From the main table view column