Add omero-zarr-pixel-buffer

[dominikl]

Same as #6450 .

Had to close the other one, because it seemed to have some kind of hidden "failed" flag which prevented scc from merging it, even after several all successful rebuilds.

[dominikl]

This now breaks the OMERO-build on merge-ci with:

14:16:41 copy-server:
14:16:41 :: problems summary ::
14:16:41 :::: WARNINGS
14:16:41 		[NOT FOUND  ] com.google.guava#failureaccess;1.0.3!failureaccess.jar (1ms)
14:16:41 	==== user-maven: tried
14:16:41 	  /home/omero/.m2/repository/com/google/guava/failureaccess/1.0.3/failureaccess-1.0.3.jar
14:16:41 		[NOT FOUND  ] org.jspecify#jspecify;1.0.0!jspecify.jar (1ms)
14:16:41 	==== user-maven: tried
14:16:41 	  /home/omero/.m2/repository/org/jspecify/jspecify/1.0.0/jspecify-1.0.0.jar
14:16:41 		::::::::::::::::::::::::::::::::::::::::::::::
14:16:41 		::              FAILED DOWNLOADS            ::
14:16:41 		:: ^ see resolution messages for details  ^ ::
14:16:41 		::::::::::::::::::::::::::::::::::::::::::::::
14:16:41 		:: com.google.guava#failureaccess;1.0.3!failureaccess.jar
14:16:41 		:: org.jspecify#jspecify;1.0.0!jspecify.jar
14:16:41 		::::::::::::::::::::::::::::::::::::::::::::::

I have absolutely no clue why and how to fix it.