Autoconf profile loading and saving rework

[sonninnos]

Description

A few changes for helping the creation, updating and management of autoconf profiles:

• Profiles are saved to the base directory instead of active driver subdir
• Profiles are searched from the base directory first and driver subdir only if there is no match

This is because:

• The user most likely wants to prioritize the manually saved profile
• There are lots of duplicate vid/pid/name profiles in the various driver directories, which would be read in order instead, resulting in false matches without manually deleting the wrong profiles

Also:

• Saving checks that at least RetroPad B and D-Pad directions or Left Analog have binds
• Saving pre-fills existing autoconf binds for saving if those already exist without having to bind each bind every time if changing only one bind
• Saving copies existing autoconf labels and display name
• Saving clears controller binds so that manual bind reset is not required in order to not make a mess of the config and to not nuke non-default keyboard binds
• Saving loads and activates the fresh saved profile without replugging
• (Auto) suffix is also shown in axis labels without having the label elements defined in the profile
• Minor cleanups