Feat/multiscale tests

[d-v-b]

I bring in a lot of the tests and validation logic from pydantic-zarr. A few notable changes I add here:

• I added .build methods to VectorScale and VectorTranslation that allow you to create the respective transform without explicitly passing in the type as a (redundant) keyword argument
• I added a private _build_transforms function that creates tuple[VectorScale] | tuple[VectorScale, VectorTranslation], this is a convenience function for making coordinateTransformations metadata.
• I add validation functions for transforms and axes, and the corresponding pydantic model type annotations

[d-v-b]

I added validation + tests to ensure that the number of multiscales.axes matches the dimensionality of the transforms defined in multiscales.coordinateTransformations (if present), and separate validation / tests to ensure that the axes match the number of transforms in the per-dataset coordinate transformations

[d-v-b]

i think this is ready for review!

[d-v-b]

this should resolve https://github.com/BioImageTools/ome-zarr-models-py/issues/33