* RANDO: Fix logic with OGC and mixed entrance pools
Adds a `GANONS_CASTLE_LEDGE` area and a `BuiltRainbowBridge` logic var. Added an event to `GANONS_CASTLE_GROUNDS` that sets `BuiltRainbowBridge` to true. Adds Entrances for `GANONS_CASTLE_LEDGE` to `GANONS_CASTLE_GROUNDS` when `IsAdult` and `BuiltRainbowBridge` (or the glitched logic that lets you skip the rainbow bridge) are true, `HYRULE_CASTLE_GROUNDS` when `IsChild` is true, and `GANONS_CASTLE_ENTRYWAY` When IsAdult is true (if child enters `GANONS_CASTLE_LEDGE` in game they are in `HYRULE_CASTLE_GROUNDS` and thus cannot go back into GANONS_CASTLE_ENTRYWAY). Adds Entrance for `GANONS_CASTLE_GROUNDS` to `GANONS_CASTLE_LEDGE` when `BuiltRainbowBridge` is true, or when the glitched logic that lets you skip the Rainbow Bridge is true.
* Adds intermediate area for age-gating
* Fixes the logic for actually killing the skulltula
* Adds hammer crouch stab as a way to kill OGC_GS