refactor(tests): migrate to vitest

[tutods]

Pull request

Description

On this pull request, I'm migrating from Jest to Vitest, updating the respective scripts and tests files.
Other than that, I've change the package manager to PNPM

Motivation and Context

This changes have a big impact on performance, tests will run faster and the PNPM is very good to handle the project dependencies.

References

Deployment Actions and Release Plan

Pre-Deployment

Post-Deployment

Types of changes

• Breaking change (a fix or feature that would cause existing functionality to change)
• Bugfix (a non-breaking change that fixes an issue)
• Chore (a task that doesn't add or fix existing code or tests)
• New feature (a non-breaking change that adds functionality)
• Performance (a non-breaking change that reduces time or space complexity of a flow)
• Refactor (a non-breaking change that restructures existing code)
• Test (added or updated existing tests without implementation changes)