WIP #982 Matlab file read/write for double and boolean matrices

Use library:
- https://github.com/HebiRobotics/MFL

Author: axkr

symja_android_library/matheclipse-core/src/main/java/org/matheclipse/core/io/Extension.java

@@ -29,8 +29,10 @@ public enum Extension {
   JPEG, //
   /** JSON */
   JSON, //
-  /** MATLAB m file */
+  /** Mathematica *.m file */
   M, //
+  /** MATLAB *.mat file */
+  MAT, //
   /** compressed image format with alpha channel */
   PNG, //
   /** RawJSON */