[CoE Starter Kit - Feature]: Refactor Shared With flows so they are more performant and can be easily expanded to other objects

[Jenefer-Monroe]

Is your feature request related to a problem? Please describe.

Now that we have the groups and their size and thing like that in the Power Platform Users table, and its updated regularly to keep it up to date, we can refactor the Share With flow to be more performant. For example we wont need to look up the user and the groups over and over as this is already in one of our tables.
Yah!

Doing this will also make adapting this concept to MDAs and Flows possible as those techs offer us a mechanism to get the Share With values

Describe the solution you'd like

Refactor these flows.

Describe alternatives you've considered

No response

Additional context?

No response

AB#2862