Revert serverExecutablePath from machine to resource scope

[jneira]

• See Allow using different versions of HLS for different workspaces with serverExecutablePath at machine scope #387
• It will suppose a new release (1.4.0)

//cc @marcin-rzeznicki @anka-213 @nc6

[lukel97]

I'm a bit out of the loop but briefly scanned the linked issue: I can understand how this would break workflows but I do think that, security aside, having any sort of setting relating to an absolute file system path should probably be machine local. File paths to executables aren't exactly portable

[nc6]

Machine local isn't the problem so much as machine global. E.g. the point of having the path set per folder/workspace isn't to share between machines, but to have it differently in different folders on the same machine.

If there were a way to allow the latter without the former, that would be fine!