Fix particle API incompatibility for modern Bukkit/Spigot versions

[ljlericson]

This PR allows CurveBuilding to function in Minecraft version 1.21.11 by updating the SendParticles class to work with modern Bukkit/Spigot versions.

Changes:

• Removed references to ParticleTypeMotion which no longer exists in the current API
• Replaced ParticleNativeAPI usage with Bukkit's native particle system
• Tested in Minecraft 1.21.11 Paper and verified that the particle effects render correctly

Not included:

• No config version changes
• Did not intentionally modify particle colours beyond compatibility fixes

[Wargroy]

Could you share the jar?

[ljlericson]

I'd recommend that you build it yourself for security reasons. You can build my version by cloning my forked repository and build with './gradlew curvebuilding-bukkit:build'. Let me know if you need any help.