[Core] Add a util to cache results from coroutines

[mk-armah]

Description

What - Adding a function to cache results from coroutine functions

Why - The currently caching utils cache_iterator_result caches results from async generators only. If third party's want to cache results from a coroutine, they result to using the event context directly, by introducing this we improve QOL a step further and adhere to DRY.

How - The addition is basically a replica of the existing cache_iterator_result decorator, however, this is designed to accommodate coroutines by awaiting results as opposed to iterative yield with async for.

Type of change

Please leave one option from the following and delete the rest:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• New Integration (non-breaking change which adds a new integration)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Non-breaking change (fix of existing functionality that will not change current behavior)
• Documentation (added/updated documentation)

[mk-armah]

Functionality has been added in another PR. #974

[matan84]

LGTM