feat(cpn): read and write to/from radio profile sd path and menu reorganisation

[elecpower]

Summary of changes:

• add models and settings functions to read from and write to available and valid current radio profile SD Path. Works like Radio Read and Write but with a different root path.
• add View menu with ability to set visibility of toolbars.
• add Tools menu
• rename Read/Write menu Radio
• move menu actions to 'more' appropriate parent menus
• housekeeping including removing redundant code, renaming and re-clustering for easier maintenance

TODO:

• source icons for new functions (WIP)
• add functions to File toolbar once icons sourced

[pfeerick]

Yikes... you have been having fun with the menus. This is gonna take some getting used to! 🤣 But they are certainly a lot less... cluttered... Looks great! Will be great to able to be able to read/write to the local SD copy (and also then be able to sync it back to handset) without need to run Simulator standalone... making it beneficial for Mac/Linux users who can't trigger the standalone Simulator.

Is it just me being picky... or should File -> Exit not always stay at the bottom of the menu?

I'll just mark this draft since you've got some TODOs on the list still.

[elecpower]

Actually you found a bug. There should not be anything below Exit. Those listed are in the wrong menu. I must have undone a change

[elecpower]

@pfeerick what are your thoughts on renaming Edit menu to Models as there are other edit functions in Radio and Settings menus? The order would be File View Models Radio ...

[pfeerick]

Makes sense... moving all the other menu entries around so now is the time to do it. And the otherwise "generic" cut/copy/paste operations are model specific ones here anyway.

[elecpower]

New monochrome icons created and as an interim measure copied to all other themes so the ui doesn't break. I will continue to work on the other themes and replace as available.
New functions added to toolbar.