Out of disk space not handled gracefully

[aza547]

WarcraftRecorder-2023-01-30.log

[aza547]

Partial fix here: https://github.com/aza547/wow-recorder/commit/207f43463c172209874445410cfe18c633cd229b.

That checks the disk has the space available on application of the config.

Harder fix is to catch all the places where we require more disk space and ensure they don't give a bad UX.