UI: Add Profiles

Adds setting profiles to the basic user interface.  For each profile, a
subdirectory for the profile will be created in
[config_dir]/obs-studio/basic/profiles which will contain the settings
data for each profile.

obs/CMakeLists.txt

@@ -101,6 +101,7 @@ set(obs_SOURCES
 	window-basic-main-outputs.cpp
 	window-basic-source-select.cpp
 	window-basic-main-scene-collections.cpp
+	window-basic-main-profiles.cpp
 	window-license-agreement.cpp
 	window-basic-status-bar.cpp
 	window-basic-adv-audio.cpp