Docs: Sort class members alphabetically

[Slayer95]

Is your feature request related to a problem? Please describe.
It's hard to navigate DPP documentation, since there is no sensible order for class members. It's clear from the screenshot that neither the types nor the names of members are used for sorting them. Maybe they are in declaration order? That's not useful for API consumers.

Describe the solution you'd like

I'd like class members to be sorted alphabetically by their names. Current categories seem fine otherwise.

Describe alternatives you've considered
Sorting by type and then by names may also make sense, but I don't favor it. So far, I have seen DPP types change, but not names.

Additional context
See attached screenshot

[braindigitalis]

unless there's a facility to do this in doxygen, it isn't something we will be doing.

note it will always group first by public, etc.

[Slayer95]

unless there's a facility to do this in doxygen, it isn't something we will be doing.

note it will always group first by public, etc.

Ofc there is: SORT_MEMBER_DOCS = YES directive...... Well? Apparently it's already enabled in the Doxyfile?

[Slayer95]

doxygen/doxygen#1272

When setting SORT_BRIEF_DOCS=YES the brief (and inherited) functions descriptions are sorted.