feat: add a convenience method to make creating an alchemy provider easier

[moldy530]

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)
• Did you run lint (yarn lint:check) and fix any issues? (yarn lint:fix)
• Is the base branch you're merging into development and not main?

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PR-Codex overview

This PR focuses on introducing a new LightAccountProvider and LightAccountAlchemyProvider to the codebase. The notable changes include:

• Adding createLightAccountProvider and createLightAccountAlchemyProvider functions.
• Adding LightAccountProviderConfigSchema and LightAccountAlchemyProviderConfigSchema schemas.
• Updating various import statements to use the new provider.
• Adding tests and documentation related to the new provider.

The following files were skipped due to too many changes: packages/alchemy/src/provider/light-account.ts, packages/alchemy/src/__tests__/provider.test.ts, site/smart-accounts/accounts/modular-account.md, packages/accounts/src/light-account/e2e-tests/light-account.test.ts, packages/alchemy/src/provider.ts, packages/alchemy/e2e-tests/simple-account.test.ts, site/packages/aa-accounts/light-account/provider.md, site/packages/aa-alchemy/provider/light-account-factory.md

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[avasisht23]

Current dependencies on/for this PR:

• development
  • PR test: update test naming conventions #242
    • PR feat: add a convenience method to make creating an alchemy provider easier #206 👈

This stack of pull requests is managed by Graphite.

[denniswon]

rebase then lgtm. Thanks!