Add Meteoric Iron Bell (again)

[EmpressAutumn]

This is NOT ready for review. - Recreated after I accidentally closed the last pull request

I've added a functional Meteoric Iron Bell, which currently uses the default Minecraft bell sounds.

Tasks needed before being reviewed:

• [ ] Fix bell block model (currently, the bell is invisible while the stand is visible)
• [ ] Create textures for the bell block
• [ ] Use datagen to dynamically create block and item models