Add "Did You Mean This" Extension

[Christopher O'Toole (christopher-o-toole)]

New extension (in preview) which uses the Aladdin service to generate and show failure recovery recommendations on command failure. This extension makes use of the hook added to parser.py in CLI version 2.4.0. For more information, see this CLI PR.

---

This checklist is used to make sure that common guidelines for a pull request are followed.

General Guidelines

• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally?

For new extensions:

• My extension description/summary conforms to the Extension Summary Guidelines.

[Yong Zhang (yonzhan)]

ai

[Jiashuo Li (jiasli)]

Maybe combine them?

Suggested change

	with self.command_group('ai-did-you-mean-this') as g:
	g.custom_command('version', 'show_extension_version')
	with self.command_group('ai-did-you-mean-this', is_preview=True):
	pass
	with self.command_group('ai-did-you-mean-this', is_preview=True) as g:
	g.custom_command('version', 'show_extension_version')

[Jiashuo Li (jiasli)]

How about adding some instructions and usage scenarios? Like what kind of error can trigger this extension.

[Feng Zhou (fengzhou-msft)]

Please also honor the no_color setting: Azure/azure-cli#12601