feat: implement ctx.custom_id and ctx.label properties

[Jalancar]

About

This pull request is about adding custom_id and label properties to ComponentContext, which makes it easier to retrieve these commonly used values.

Checklist

• I've ran pre-commit to format and lint the change(s) made.
• I've checked to make sure the change(s) work on 3.8.6 and higher.
• This fixes/solves an Issue.
  • [REQUEST] Implement component-specific attributes from v3 #480
• I've made this pull request for/as: (check all that apply)
  • Documentation
  • Breaking change
  • New feature/enhancement
  • Bugfix

[Jalancar]

Let me know if there are any other attributes anyone would want. I didn't include ctx.component since the idea is to have access to the info without needing it, or ctx.selected_options since that is passed to the callback already

[EepyElvyra]

as in #465 please use @property values.

[Jalancar]

I changed them to properties, but I don't know how to mark your change request as completed (if I even can)

[Toricane]

I changed them to properties, but I don't know how to mark your change request as completed (if I even can)

Press the rerequest button or something like that

[Jalancar]

I changed them to properties, but I don't know how to mark your change request as completed (if I even can)

Press the rerequest button or something like that

Found it, thanks