[FEATURE] Convert Hard-Coded Player Stats to Godot Resource

[ikostan]

Description:
Convert player stats hard-coded in player.gd (e.g., hitbox_scale=0.25, sprite_size=174x132) to a Godot Resource.

Why is this useful?

• Learning Godot: Resources for entity stats.
• Extensibility: Swap player variants.
• Balancing: Adjust health/size easily.

Proposed Implementation:

1. Create PlayerStats.tres with fields: hitbox_scale (0.25), sprite_size (174,132), max_health (100.0).
2. Load in Player.gd _ready(): var player_stats = load("res://resources/PlayerStats.tres").
3. Use in setup (e.g., set_scale(player_stats.hitbox_scale)).
4. Extend for future upgrades.

Additional Context:
Prepares for enemies/power-ups; consistent with other resources.