feat: add zod runtime validation for ethers adapter provider

[avasisht23]

Pull Request Checklist

• Did you add new tests and confirm existing tests pass? (yarn test)
• Did you update relevant docs? (docs are found in the site folder, see guidleines below)
• Do your commits follow the Conventional Commits standard?
• Does your PR title also follow the Conventional Commits standard?
• If you have a breaking change, is it [correctly reflected in your commit message](https://www.conventionalcommits.org/en/v1.0.0/#examples? (e.g. feat!: breaking change)
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• Is the base branch you're merging into development and not main?

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PR-Codex overview

Detailed summary

• Added EthersProviderAdapterOptsSchema schema definition in types.ts.
• Imported and used EthersProviderAdapterOptsSchema in provider-adapter.ts to validate the options passed to EthersProviderAdapter constructor.
• Added a test in provider-adapter.test.ts to check runtime validation when the entryPoint is invalid.

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[avasisht23]

Current dependencies on/for this PR:

• development
  • PR feat: remove sub-account support for light account #185
    • PR feat: add zod runtime validation for base account #186
      • PR feat: add zod runtime validation for alchemy provider #187
        • PR feat: add zod runtime validation for ethers adapter provider #188 👈
          • PR feat: add zod runtime validation for simple account #189

This stack of pull requests is managed by Graphite.