Update Manager Enhancement

[mlee12382]

Is your feature request related to a problem? Please describe

Add the ability to point to a script to run under update_manager when a component is updated.

For instance it is possible to set up scripts to flash hardware with updated klipper firmware and it would be nice to be able to have the update_manager automatically run the script any time klipper is updated. Or in other components if they need to re-run an install script or something when updated, it would be nice to have it done automatically by specifying the script location in the update_manager settings.

Describe the solution you'd like

See above.

Describe alternatives you've considered

No response

Additional information

No response