feat: Use vitest for testing

[Nerivec]

https://vitest.dev/guide/why.html

Reasoning:

• More modern approach (TS, ESM...).
  • Jest is annoying (at best) with ESM, clearly something that will be more and more of a problem
• API is almost compatible with Jest, required less refactoring (than going to Node built-in for example, where several things would need complete refactoring)
• Support for snapshots
• Support for bench (might be good to have something like this in CI with automatic reporting in PRs, at least for critical logic)
• Support for types testing
• Can use @vitest/ui locally if needed
• Similar to above, can use vscode extension (this one is definitely a great addition!)
• Faster, cleaner (lot less deps)

Related changes:

• Fix couple of ZNP tests that weren't behaving as expected (testing timeouts)
• Fix CONNECTED state not cleared in closePort() in ASH protocol for ember (only has an impact in tests due to various bypasses)
• Cleanup coverage ignore (many stale ones that were never cleared)
• Fix inconsistent mocking of date in controller (and cleanup some stale mocks).