pidgin/pidgin

Add documentation for all PURPLE_TYPE_ functions as well as PURPLE_TUNE_ constants

Add document for all PURPLE_TYPE_ defines as well as PURPLE_TUNE_ constants

Testing Done:
Compile and doc build.

Reviewed at https://reviews.imfreedom.org/r/92/
syntax: glob
.*.swp
.DS_Store
.flatpak-builder
*.pyc
*~
\#*\#
subprojects/*/
syntax: regexp
^build(.+)?\/
win32-install-dir(\.release)?