doxygen member groups support (///@{ ///@})

[myocytebd]

Feature Request

doxygen Member Groups can populate some doc to every member of the group, and have a group name and group description.
https://www.doxygen.nl/manual/grouping.html#memgroup

    ///@{
    /** Same documentation for both members. Details */
    void func1InGroup1();
    void func2InGroup1();
    ///@}

/** @name Group2
 *  Description of group 2. 
 */
///@{
/** Function 2 in group 2. Details. */
void Memgrp_Test::func2InGroup2() {}
/** Function 1 in group 2. Details. */
void Memgrp_Test::func1InGroup2() {}
///@}

Member Groups is used in some popular libraries, e.g. libstdc++, llvm, ffmpeg headers.

Currently, cpptools doesn't recognize @{ patterns and treats them as regular comments.