* [build.psm1] - mc.exe input file needs quotes
For filenames that have spaces or paths to that file that have spaces, the input filename needs to have quotes around it.
* Quoted more paths so tests run from directories with spaces
Found a few locations where paths weren't qutoed or escaped with '& ...' that are needed to get tests to run from build directories with spaces in them.
This restructuring moves tests to a directory name which matches the module
in which the cmdlet resides which should improve the discoverability of a
specific test.
For tests which are not about cmdlets in a module, new directories have been
created to make those tests easier to find as well