Add aliases support for add-icon-data script

[LitoMore]

Related to #7849

The aliases field is more complicated. We may need a bunch of questions to collect users' inputs.

Here is the type overview:

type Aliases = {
	aka?: string[];
	dup?: SimpleIcon[];
	loc?: Record<langageCode, string>;
	old?: string[];
}

Maybe we could add a tip to contributing doc to let users modify the _icons/simple-icons.json directly.

[LitoMore]

@mondeja Any thoughts about this? If we need to add aliases support, we will need to add a lot of prompts.

The loc, requires users to select some languages with checkboxes, then performs some prompts to accept the user's inputs.

[mondeja]

It works nice 🌟 Seems like adding the loc field is not too much useful for the script, maybe in the future.

Feel free to merge it after resolve the suggestions 🔧