feat(NODE-6494): add support for hint on distinct commands

[baileympearson]

Description

What is changing?

Distinct commands now support hint.

Is there new documentation needed for these changes?

What is the motivation for this change?

Release Highlight

distinct commands now support an index hint

Important

Driver support for server 4.0 will be removed in an upcoming minor release.

The Collection.distinct() method now supports an optional hint, which can be used to tell the server which index to use for the command:

// providing an index description
await collection.distinct('my-key', { 
  hint: { 'my-key': 1 }
});

// providing an index name
await collection.distinct('my-key', { 
  hint: 'my-key'
});

This requires server 7.1+.

Double check the following

• Ran npm run check:lint script
• Self-review completed using the steps outlined here
• PR title follows the correct format: type(NODE-xxxx)[!]: description
  • Example: feat(NODE-1234)!: rewriting everything in coffeescript
• Changes are covered by tests
• New TODOs have a related JIRA ticket