* Update OpenRGB Plugin Interface to include functions for loading/saving profile JSON data into OpenRGB profiles
* Update ProfileManager to handle auto-load profiles (Exit, Open, Resume, Suspend) and move their settings to ProfileManager section
* Update ProfileManager to store profiles in "profiles" folder in .json format
* Update ProfileManager to store size profile in sizes.json
* Update ProfileManager to perform device UpdateMode/UpdateColors when loading profile
* Code cleanup of ProfileManager and profile-related code
* Moved Setter next to Getter
* Set `config_dir` to ensure consistent directory for all files resolving #2551
* Changed PluginManager loading log message to include directory
* Rework Plugin Manager so that plugins can be loaded after initialization
* Use a callback function to add plugin tabs to the dialog
* Install button lets you choose plugin file, copies it to plugins directory, and immediately loads it
* Remove button deletes selected plugin file from plugins directory - need to add a means to unload it first