What does this PR do?

This PR creates a lazy-esq style import decorator designed to be used with integrations that can optionally be there and require certain imports globally. This further improves on #1959, with a speed difference shown below (tl;dr 45% speedup):

Before change, with all tracking modules available:

After change:

How does it work?

This operates by writing a decorator with the exact module to be imported later. In the same function that is decorated, global {mymodule} should be declared and assigned to accelerate.utils.imports.{mymodule}, where it'll be imported from.

The main con here is we lose static checking, however the argument here is immense speedup and flexibility, while reserving this just for integrations.

Fixes # (issue)

Lays foundation to solve #1952

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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• Did you write any new necessary tests?

Who can review?

Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
members/contributors who may be interested in your PR.

@BenjaminBossan @SunMarc