Add Earth Shaker

[clevernt]

pipeline also did some stuff in enemy files.. should be fine surely

• [x] New weapon package
• [x] Config in weapon package
• [x] Run pipeline with added config (generates weapon curve, .generated.json files)
• [x] Weapon key
• [x] Shortcuts for weapon key
• [x] Add weapon package to imports
• [x] Weapon passive (might include an attack)
• [x] Update documentation