Creates a new BasicSettings class in common/settings, and forces setting
a default and label for each setting that uses it in common/settings.
Moves defaults and labels from both frontends into common settings.
Creates a helper function in each frontend to facillitate reading the
settings now with the new default and label properties.
Settings::Setting is also now a subclass of Settings::BasicSetting. Also
adds documentation for both Setting and BasicSetting.
This introduces a new setting Enable FS Access Log which saves the filesystem access log to sdmc:/FsAccessLog.txt
If this setting is not enabled, this will indicate to FS to not call OutputAccessLogToSdCard.
Fixes softlocks during loading in Xenoblade Chronicles 2 when certain DLC is enabled.
