add phyloseq bar chart

[MaraBesemer]

FOR CONTRIBUTOR:

• I have read the CONTRIBUTING.md document and this tool is appropriate for the tools-iuc repo.
• License permits unrestricted use (educational + commercial)
• This PR adds a new tool or tool collection
• This PR updates an existing tool or tool collection
• This PR does something else (explain below)

[bgruening]

LGTM! Can you plese fix the Rscript linting? Thanks

[bgruening]

I think we are using this script https://github.com/galaxyproject/tools-iuc/blob/main/.github/styler.R

[bgruening]

Linting passed but now your good test are falling.

Job in error state.. tool_id: phyloseq_plot_bar, exit_code: 1, stderr: Error in readRDS(opt$input) : bad 'file' argument
Execution halted

[paulzierep]

Fix: MaraBesemer#1
Could you maybe add one or two more test, that check for empty parameter input and different parameters ?

[bgruening]

Thanks @MaraBesemer !