feat: implement structured levels

[SantiagoPidji]

This pull request updates the jungle and ruins level configuration files to improve gameplay balance, enemy variety, and environmental features. The most significant changes include major rebalancing and renaming of enemies in the jungle levels, introduction of new obstacles and enemy groups, and the addition of wall definitions for the ruins levels to support collision detection.

Jungle Level Updates:

• Replaced and rebalanced enemy types in jungle_level1.json and jungle_level2.json, including renaming, stat adjustments (HP, speed, score, projectile properties), and new movement patterns. Old enemies like smallEnemy and mediumEnemy were replaced by new ones such as mosquito, hunter, pyrotechnician, and heavyGunner. [1] [2]
• Updated enemy group compositions and spawn patterns, introducing new enemy groups (infantrinsect, jungleCommander, ambushSquad) with revised member arrangements and offsets for more dynamic encounters. [1] [2]

Obstacle and Wave Changes:

• Modified obstacle definitions: gravityWell in jungle_level1.json now has adjusted pull strength, damage, and radius; vineTrap replaces gravityWell in jungle_level2.json with new stats. [1] [2]
• Reworked enemy and obstacle wave timing, spawn patterns, and power-up placements for both jungle levels to create a more varied and challenging progression. [1] [2]

Ruins Level Environmental Features:

• Added a new walls section to both ruins_level1.json and ruins_level2.json, specifying wall sprites, scroll speed, dimensions, depth, and collision boxes to support environmental collision and level boundaries. [1] [2]

[EvannBloutin]

[ann7415]