Allow for QC path set outside [improvement]

[tobigithub]

Hi,
for some cluster users that are not sudoers it is impossible to use the "usr/local/bin" path for QC. It would be nice
if that can be changed in the settings to a different local path.
Tobias

[tobigithub]

Can that be closed? Because in qcxms 5.1.1. there is an option that works.
Also is the string in quotation marks or just the simple unix path.

-qcp <string>
<string> = path to the QC code. /usr/local/bin is default

[JayTheDog]

This was possible since QCEIMS, but not well documented inside the source code. The documentation of the QCxMS flags can be found here: https://xtb-docs.readthedocs.io/en/latest/qcxms_doc/qcxms_run.html

Fixed comment in source and added the flag -qcpath as an option for clarification.

Example usage:
qcxms -qcp ~/bin/
qcxms -qcpath ~/bin/