feat(select): add 'indexHint' option

[jessethomson]

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Description of change

I'm adding way to add index hints to a select query.

Example usage:

db.User.findOne({
    where: {
        email: 'joe@example.com',
    },
    indexHint: 'idx_name',
});

// This generates SELECT * FROM `User` USE INDEX (idx_name) WHERE ...

Here's an issue from a while ago requesting this feature. #6370
It went stale and was closed though.

(This is my first PR to open source/on github. I couldn't figure out how to get permissions to make a feature branch so I created a fork instead. If this is not desired I can change it.)

[sushantdhiman]

In past I have rejected this feature because there was little to no demand, but it seems now this feature is desired by some users.

There are three PRs related to this change #9378, #9409 & #8401

I suggest authors of these PRs or anyone else who want this feature to suggest an API #9421 and propose a single PR after API is finalized.

Looks like MySQL / MSSQL / SQLite support this feature. PR with support and tests for all these dialects will be appreciated