feat(rpc): Implement EthNewFilter

[sudo-shashank]

Summary of changes

Changes introduced in this pull request:

• Implement EthNewFilter with alias eth_newFilter and test.

| RPC Method    | Forest | Lotus |
|---------------|--------|-------|
| eth_newFilter | Valid  | Valid |

Reference issue to close (if applicable)

Closes #4665

Other information and links

Change checklist

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