feat: rn-skills CLI

[artus9033]

Brings a new CLI for opinionated managing skills based on your dependencies - batteries included. Uses Vercel's skills CLI underneath, being a lightweight wrapper over it.

Provides a rn-skills binary which has three modes (commands):

• auto (default, executed if no command is specified) - which adds all
• interactive - which does the above, but asks the user to select what they want to add - allowing for customization
• report - which is read-only and only reports what could be changed
• list-supported - which lists supported (predefined) the libraries & respective skills to which they are mapped

The features are:

• scans dependencies in every package.json (recursively in the CWD)
• uses an internal lookup table for predefined library -> skillset matching
• installs the given skills using the Vercel skills CLI
• cleanup: removes skills that are on the list-supported list, but the current project does not have libraries that would justify their presence (can be disabled with the --no-remove flag)