api: add proper doxygen comments to C++ headers and normalise doc
-rw-r--r-- 77 .gitignore
-rw-r--r-- 2390 CMakeLists.txt
-rw-r--r-- 1060 COPYING
-rw-r--r-- 102042 Doxyfile.in
-rw-r--r-- 6103 DoxygenLayout.xml
-rw-r--r-- 3333 README.md
drwxr-xr-x - api
drwxr-xr-x - cmake
drwxr-xr-x - docs
drwxr-xr-x - examples
drwxr-xr-x - include
drwxr-xr-x - src
drwxr-xr-x - tests