Turn each Bio-Formats reader/writer pair into its own Format

[hinerm]

Smushing all Bio-Formats Readers into a single SCIFIO Format and putting at the highest priority is technically incorrect as it skews priority of individual formats, which forces non-optimal (and potentially incorrect) Checker results.

Furthermore, relying on construction of new ImageReaders can be detrimental to performance.

A better solution would be to wrap each Bio-Formats Reader(/Writer) in a SCIFIO Format which could be injected into the FormatService.

We could then use the blacklist of formats implemented in SCIFIO to determine relative priority for each Bio-Formats wrapped format.

[imagejan]

Marginally related (although perhaps orthogonal to this issue): #20.