fix: map RPC aliases to what Lotus uses + agent name in client version

[LesnyRumcajs]

Summary of changes

Changes introduced in this pull request:

• use Lotus's aliases as outlined in https://github.com/filecoin-project/lotus/blob/a9718c841e1fced8afc6e9fee2db2a2b565acc42/api/eth_aliases.go (discrepancy reported by @AlexeyKrasnoperov)
• added agent type to Filecoin.Web3ClientVersion

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.