OME-TIFF metadata IO support in the TIFF ImageIO

### Description

Add OME-TIFF metadata IO to the ITK TIFF ImageIO. OME-TIFF is the most standard TIFF metadata format in adopted by microscopy community.

### Expected behavior

[OME-TIFF](https://docs.openmicroscopy.org/ome-model/6.2.2/ome-tiff/) metadata is read and written by ITK's TIFF ImageIO. This in includes spatial metadata and additional metadata in the Image MetaDataDictionary.

### Actual behavior

This metadata is not used.

### Additional Information

Spatial metadata can be stored in `PhysicalSizeX`, `PhysicalSizeY`, and the per-`Plane`: `PositionX`, `PositionY`, `PositionZ`.