[SDESK-7462] - Events, Planning & History resource, service and REST API

[BrianMwangi21]

Purpose

This PR creates new async events and planning history resources and services and exposes their rest API by :

• Implementing a base history service async resource service class
• Implementing Event History resource model, resource config and service
• Implementing Planning History resource model, resource config and service
• Registering these new resources with the Planning module

Solves: SDESK-7462

[MarkLark86]

It would also be good if you can add types to function signatures, which enables type checking by mypy and autocomplete/error checking from within IDs

[MarkLark86]

Good job @BrianMwangi21 Just a few small things

[MarkLark86]

There are mypy/type errors, please check those out as well

[MarkLark86]

Looks good, just a couple improvements to the types. Please check wherever you're using just Any and replace with dict[str, Any], so type checking/IDE knows the type of the variable

[eos87]

I left a few minor comments.

[MarkLark86]

Looks good to me