InstancedAttribute could use additional types to allow shaders more options for attributes

[Archimagus]

I have a shader that benefits from being able to pass values as an integer rather than a float.
I would like to be able to use Drei's Instances along with its InstancedAttribute to pass the data to the shader. however InstancedAttribute only creates a Float32Array which prevents the attribute from coming across properly.

Suggested implementation:

Add an optional parameter to the InstancedAttributeProps to specify an array type.
PR: #2182