doc: convert TSIOBufferCreate(3) to sphinx
doc: convert TSInstallDirGet(3) to sphinx
doc: convert TSMBufferCreate(3) to sphinx
doc: convert TSmalloc(3) to sphinx
doc: convert TSPluginInit(3) to sphinx
doc: convert TSRemap(3) to sphinx
doc: convert TSTrafficServerVersionGet(3) to sphinx
doc: convert TSUrlCreate(2) to sphinx
doc: remove nroff man pages
doc: add new manpages to HTML docs
doc: remove Library section from man pages