feat: replace spec with a custom hardhat solidity test reporter

[galargh]

• Because this PR includes a bug fix, relevant tests have been included.
• Because this PR includes a new feature, the change was previously discussed on an Issue or with someone from the team.
• I didn't do anything of this.

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This PR introduces a custom hardhat solidity test reporter in place of the spec reporter that we used to use.

It is an implementation of the design outline in https://www.notion.so/nomicfoundation/Runner-Reporter-Design-11f578cdeaf580b8b01ddc43ae589f05

This PR doesn't change the output formatting.

Testing

The runner/reporter setup have been tested manually. It would be great to introduce a more formalised E2E testing for the solidity testing task, but it is left as a follow-up for now.

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Name	Status	Preview	Comments	Updated (UTC)
hardhat	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 16, 2024 4:13pm

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[alcuadrado]

I think EDR changed how they export enums now, so this can probably be improved in a later PR, so that we avoid the duplication.

[galargh]

I'm getting Cannot access ambient const enums when 'isolatedModules' is enabled.ts(2748) when trying to use the TestStatus enum from edr. Should I report that to the team?