Few commands missing from builtin_commands_meta_data.yaml

[UltraInstinct05]

There seems to be a few commands that are missing from the builtin_commands_meta_data.yaml file. For example, I was unable to find any reference for the drag_select command. Also some of the commands (for the Find In Files) mentioned in the following issue :- sublimehq/sublime_text#1447
are also missing. It would be nice at add them as this yaml file is the only complete source of possibly every command one may find with reference to all the args.