add missing equals and hashcode

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (2389339) 85.11% compared to head (ae00765) 85.11%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #136 +/- ## ========================================= Coverage 85.11% 85.11% Complexity 611 611 ========================================= Files 146 146 Lines 1881 1881 Branches 55 55 ========================================= Hits 1601 1601 Misses 237 237 Partials 43 43 ``` | [Flag](https://app.codecov.io/gh/onlydustxyz/marketplace-indexer/pull/136/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=onlydustxyz) | Coverage Δ | | |---|---|---| | [integration_tests](https://app.codecov.io/gh/onlydustxyz/marketplace-indexer/pull/136/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=onlydustxyz) | `85.11% <ø> (ø)` | | | [unit_tests](https://app.codecov.io/gh/onlydustxyz/marketplace-indexer/pull/136/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=onlydustxyz) | `31.36% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=onlydustxyz#carryforward-flags-in-the-pull-request-comment) to find out more.

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