Investigate if Mac support is feasable

[syne0]

Currently osp only realistically supports Windows due to Windows-specific functions from PS Framework and the logging functions. Though the market share would be small, should investigate if adding Mac support is possible.

Some thoughts on what needs to be done to see if mac support is feasible:

• Determine if there are any particularly difficult challenges with migrating osp to PS v7+. I have never touched 7 so I need to do more research on differences and if an overhaul for the windows vers of osp makes sense, for the bulk of the code to stay the same.
• Look into any differences with PS Framework on Win vs Mac regarding how it's implemented.
• Create list of all functions/features/code that interact with the Windows OS (off the top of my head it's the logging and appdata, at the very least) and determine how to implement those bits or comparable code on Mac.

If adding mac support wont be a massive endeavour then I will work on it. Otherwise, I'll leave it for the future as a possibility.