Global Menu: Add toggle for Steam Deck compatibility information

[sonic2kk]

May help #781.

Adds a checkbox to the global menu which controls whether or not to fetch Steam Deck compatibility information. This seems to be an outlier, as other options (ProtonDB rating, game info, etc) already have toggles here. Guess it slipped my mind when implementing it (#634, 6c64dc2).

Needs some further testing, and other options may also need options. Should investigate that too.

Also, I don't think this feature has a wiki page. Should add one.

[sonic2kk]

Documented here: https://github.com/sonic2kk/steamtinkerlaunch/wiki/Game-Data#steam-deck-compatibility

[sonic2kk]

Made a change in this PR too which doesn't display the Steam Deck compatibility rating on the wait requester if we don't have it. The Main Menu already followed this too, so it's a little bit of consistency.

Also improved some of the logging too following the toggle added here. If we have DLSTEAMDECKCOMPATINFO off, it won't warn about jq potentially being missing when we don't have any Steam Deck compat info. We would expect to not have any compat info if this option is off.