feat: Adding healthcheck module with api and server status

[gmatheu]

Adding default healt check module

By executing the command: checkhealth codeium

Right after starting Neovim, you will get something like:

After a couple of seconds, when the server is started:

[CLAassistant]

All committers have signed the CLA.

[pqn]

Cool!

[pqn]

Could you undo the formatting changes?

[xafarr]

@gmatheu any update on this?

[gmatheu]

Could you undo the formatting changes?

Sure, my bad... I'll push changes later

[gmatheu]

@gmatheu any update on this?

As it is, is useful for the purpose.

Ther is a couple of improvements that can be applied later (such as showing the log file location, currently is encapsulated in the log module)