Exposed hide_error_panel and hide_error_mark in Sublime Project, so t…

[odhinnsrunes]

…hey can be controlled on a per project basis. Handy for cross development where the target's headers aren't liked by clang on the host platform. For example a MacOS host editing files on a Windows Virtual Machine.

[odhinnsrunes]

Tried it and it works on my system for my needs. Suppose it would be possible to also do the inhibit one as well, but I didn't need it.