Fairy prompt to pick up fishing rod

[melanie]

When you enter the pond area, the fairy should prompt you to pick up the fishing pole.

Unlike other prompts, we can's hook this into entering a scene; we'll have to walk over some kind of trigger to make it work, similar to the exit checks in the bedroom and living room.

[melanie]

The fairy should probably also block you from leaving the pier if you haven't picked up the instrument.