V 0.4 - Jam release, map overhall, added "tuuret", shards, sfx, music

Jam version for the 2D Game Jam 2024.

Added "tuuret", a non-mobile enemy that shoots fireballs.

Added sfx for various actions, and music.

Completely overhalled the map to something playable.

Added crystals, the objective. There are 4 of these.

Added special effects, such as screen shake.

Also changed the character sprite.