Rustbound Magic Easy Mode

Make Rustbound Magic mobs easier to handle. Balancing is currently WIP.

List of changes:

- disable the ravager entirely: this sneaky one is silent until ready to explode to your face, too annoying
- redistribute the ravager-specific loot to the drone and sentry
- reduce damage of drone and sentry
- increase attack cooldown of drone and sentry
- increase sentry range attack cooldown
- reduce seeking range of drone and sentry to avoid them more easily
- reduce sentry speed to break pursuit more easily
- slightly reduce spawn rate of drone and sentry
- reduce max spawn count of drone

This is my first time trying to mod anything, please be nice.