Issue Templates: Add default type labels to issue templates.

[peterwilsoncc]

What?

Automatically add labels to issues based on the issue template used.

• Bug Report: [Type] Bug
• Enhancement: [Type] Enhancement
• New Release: Gutenberg Plugin, [Type] Project Management

Why?

I was asking @jordesign about whether adding labels would skip the triage process (it doesn't) and mentioned work automates adding the basic type labels. Jordan thought that sounded appealing.

How?

Editing the issue templates to include labels fields

Testing Instructions

I'm not sure it's possible to test these without a yolo merge/test repo.

Testing Instructions for Keyboard

Screenshots or screencast

[jordesign]

This is brilliant - thanks @peterwilsoncc.
@priethor - it would be lovely to get this pushed through

[github-actions]

Flaky tests detected in 67dab24.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/6740699713
📝 Reported issues:

• [Flaky Test] should partially select with shift + click (@webkit) #53524 in /test/e2e/specs/editor/various/multi-block-selection.spec.js

[Mamaduka]

A great idea! Thank you @peterwilsoncc and @jordesign!

[peterwilsoncc]

Working as expected... now.

Initially the feature request template failed for yaml reasons so I yolo merged #55862 to fix it.

[priethor]

Thanks for implementing this, Peter! ❤️