Add Matt Joiner (anacrolix) from Erigon

[yperbasis]

• Name: Matt Joiner (anacrolix)
• Team: Erigon
• Joined: April 2025
• Eligibility:
  • Matt is a network/p2p expert and the author of https://github.com/anacrolix/torrent.
  • He has greatly improve performance and stability of torrent snapshot sync in Erigon.
  • He is currently working on disc v5 implementation as well as other torrent/network/p2p improvements in Erigon.
• Contributions: https://github.com/erigontech/erigon/pulls?q=author%3Aanacrolix
• Proposed Weight: Full (1.0)