docs: Add docs/ folder with in depth topics as well as DoxygenLayout.xml file

* C headers now have @briefs and include examples
* Examples have altered 'Interesting' Sections

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

examples/hellomaa.c

@@ -23,14 +23,13 @@
  */
 
 #include "stdio.h"
-
+//! [Interesting]
 #include "maa.h"
 
 int
 main(int argc, char **argv)
 {
-//! [Interesting]
     fprintf(stdout, "hello maa\n Version: %s\n", maa_get_version());
     return 0;
-//! [Interesting]
 }
+//! [Interesting]