Add more of the picrust suite

[bgruening]

@shiltemann kickstarted these tools already in https://github.com/galaxyproject/tools-iuc/pull/1044

A few tools are missing and I think this is a very good task for a beginner that wants to learn Galaxy Tool Dev.

• [ ] predict_traits
• [x] metagenome_contributions
• [ ] ancestral_state_reconstruction
• [x] compare_biom
• [x] format_tree_and_trait_table
• [ ] run_genome_evaluations
• [ ] scale_metagenome

[bernt-matthias]

Will this still be needed once we have picrust2? https://github.com/galaxyproject/tools-iuc/pull/3904

[shiltemann]

I don't think it will be, no