Fixing typing for the whole Select component

[Mil4n0r]

Checklist

• [x] Build process is done without errors. All tests pass in the /lib directory.
• [x] Self-reviewed the code before submitting.
• [x] Meets accessibility standards.
• [x] Added/updated documentation to /website as needed.
• [x] Added/updated tests as needed.

Description Removed ts-nocheck and fixed the problems related to it. Also typed all the methods and variables.

Additional context A few small changes to logic were made in order to allow a better readibility and, overall, cleaner code. Also removed redundant types (SingleSelect and MultipleSelect could be merged into one type).

Closes #1555

[GomezIvann]

One last comment, the code is unformatted. Can you please install the code formatter we use in Halstack in your Visual Studio Code IDE?

Name: Prettier - Code formatter Id: esbenp.prettier-vscode Description: Code formatter using prettier Version: 10.1.0 Publisher: Prettier VS Marketplace Link: https://marketplace.visualstudio.com/items?itemName=esbenp.prettier-vscode

[Mil4n0r]

Thanks for the detailed review Iván! I just added the requested changes 😄

[GomezIvann]

Great job Enrique, this was a tough one!