Introducing the initial hooks for building a pathfinding console floater.

indra/newview/CMakeLists.txt

indra/newview/app_settings/commands.xml

indra/newview/llfloaterpathfindingconsole.cpp

indra/newview/llfloaterpathfindingconsole.h

indra/newview/llviewerfloaterreg.cpp

indra/newview/skins/default/textures/textures.xml

...view/skins/default/xui/en/floater_pathfinding_console.xml

indra/newview/skins/default/xui/en/strings.xml