Add the MissionBoardRewardOptions enum back in

[Lenni009]

Is your feature request related to a problem? Please describe.
In 4.40, HG removed the MissionBoardRewardOptions enum, so we have no clear way of knowing what each array item means. This specifically affects the DEFAULTREALITY.MBIN file, where this array is used.

Describe the solution you'd like
Hardcode the enum members back in, like we have done with other enums as well.

Additional context
Needs verification whether the array members actually correspond to the names we want to give them.

Here's a diff between 4.38 (left) and 4.43 (right) DEFAULTREALITY.EXML:

[monkeyman192]

For context, the reason they were removed is because the enum we hard-coded to be associated with this array became a few elements bigger, and so no longer was able to be used with the array due to the size mismatch.

[Babscoole]

So, could be added back in, BUT, oldschool style, would need to test what each enum element now does/changes, in order to hardcode labels back in for them.