feat: implement testing of Filecoin.ChainGetBlockMessages API

[elmattic]

Summary of changes

Changes introduced in this pull request:

• Add Filecoin.ChainGetBlockMessages testing in forest-tool api compare

Reference issue to close (if applicable)

Part of #3639

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation,
• 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.

[lemmih]

Just to confirm: Filecoin.ChainGetBlockMessages now shows up as Valid for both Forest and Lotus?

[lemmih]

Oh, btw, the PR description needs to be updated.

[lemmih]

And this PR is part of #3639

[elmattic]

Just to confirm: Filecoin.ChainGetBlockMessages now shows up as Valid for both Forest and Lotus?

Yes, I'm seeing that:

| RPC Method                            | Forest              | Lotus         |
|---------------------------------------|---------------------|---------------|
| Filecoin.ChainGetBlock                | Valid               | Valid         |
| Filecoin.ChainGetBlockMessages        | Valid               | Valid         |
| Filecoin.ChainGetGenesis              | Valid               | Valid         |
...

[lemmih]

Just to confirm: Filecoin.ChainGetBlockMessages now shows up as Valid for both Forest and Lotus?

Yes, I'm seeing that:

| RPC Method                            | Forest              | Lotus         |
|---------------------------------------|---------------------|---------------|
| Filecoin.ChainGetBlock                | Valid               | Valid         |
| Filecoin.ChainGetBlockMessages        | Valid               | Valid         |
| Filecoin.ChainGetGenesis              | Valid               | Valid         |
...

Excellent!