Added basic ability to find Matlab installations. Added test cpp file under modules/matlab/test to test mex compiler within cmake

modules/matlab/test/test_compiler.cpp

@@ -0,0 +1,5 @@
+#include <mex.h>
+
+void mexFunction(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[]) {
+
+}