This script manages the logic for generating waves of enemies (spiders) in a game level. It controls when waves of enemies appear and the type of spiders that are generated.

Awake: Initializes references and states at the start of the scene. Recovers the level selected by the TransitionManager.

Update:
Called each frame, this method manages the temporal logic of waves:
- Reduces cooldown between waves.
- If a wave has ended and the game hasn't stopped, starts a new wave.
- Checks and starts the level after the initial delay.

Start: Initializes variables required for level start.

StartLevel (Level level): Initializes parameters to start wave generation for the given level.

SummonWave (UnitWave wave): Coroutine that generates spiders for a given wave.
Differentiates between fluid waves (with a delay between each spider) and standard waves (all spiders generated at the same time).

PickASpiderToSpawn(UnitWave wave): Randomly selects the type of spider to generate according to the probabilities defined in the wave.