feat(forge): add selectors list subcommand

[schroyar]

Motivation

Lists functions, events and errors signatures + selectors of an individual contract or all contracts in the workspace

Closes #6038

Solution

• add List to the SelectorsSubcommands enum on inspector.rs and implement the logic, using comfy_table to print the results

Example output:

forge selectors ls Dummy

[mattsse]

lgtm, I made some simplifications now that we moved to alloy types

pending @Evalir

[Evalir]

nice! will be useful for a lot of people. Love the simplifications @mattsse

[holic]

thanks all!

[seanmc9]

Just want to say thank you for this!! This is so helpful!