Hologram movement fix for 1.7 clients

[EthanKeating]

This PR addresses an issue where 1.7 hologram entities do not interpolate movement, resulting in choppy or jittery visuals when holograms move.

The issue is resolved by wrapping the hologram in an interpolated entity, in this case a Squid, which is not affected by gravity and its movement is interpolated by the client. This provides a smooth animation during movement.

Before:
https://github.com/user-attachments/assets/68e10115-66ab-4671-b673-3f8bce9b0ba2

After
https://github.com/user-attachments/assets/0ad093fe-d240-4b33-9b63-b3e0f9e8f18c

This will add a little bit of network & client overhead as it will be spawning an extra entity per hologram. But, this fix has been tested in production for a little over 2 months and has not caused me any issues personally. A config option could be a good option if you are concerned about the network and client overhead.

[FlorianMichael]

Otherwise looks good, please keep the original formatting next time as currently it's hard to review with the git diff being broken

[EthanKeating]

I have made your requested changes, thanks for the tips. I did not change the offset as I found the previous offset positioned the holograms higher than what 1.8+ users were seeing.

[FlorianMichael]

Thanks. This should be fine, I am going to pull later after doing some final testing.