SpawnProtection

Changes

• Fixed off-hand tool interactions bypassing protection.
• Improved piston, sponge and dispenser handling.
• Added protection for harmful potions, projectiles and indirect damage.
• Fixed several entity, vehicle and inventory protection edge cases.
• Improved dragon egg, entity bucket and protected block interaction handling.
• Reduced false positives near the protection border.
• Improved command help permission filtering.
• General code cleanup and reliability improvements.