Add Specific Dungeons Rewards to Rainbow Bridge and BK conditions

[GSKirox]

Currently we can have a number of dungeons, but the only way to pick specific dungons is the Vanilla bridge option, which comes with a Light arrow requirement inherited from the base game. The idea would be to be able to choose a specified set of rewards (for example : Light Med + Forest Med + Goron Ruby) to give more flexibility to players and tournament orgs.

We already have the UI for this kind of multi select in the MQ dungeons dropdown for example. For the patching part, this would probably benefit from rewriting the assembly code in rainbow_bridge.asm to a C function instead, to have more flexibility. The most difficult is most likely to adapt the logic for this condition, notably the Paths.