lint and format all modules and setup GitHub check

[sreichl]

go through every module and apply linting, formatting and subsequent testing.
Also setup GitHub workflow for automated link check

check https://github.com/epigen/unsupervised_analysis to see how it is implemented

and wiki for instructions

• https://github.com/epigen/unsupervised_analysis
• https://github.com/epigen/atacseq_pipeline
• https://github.com/epigen/rnaseq_pipeline
• https://github.com/epigen/fetch_ngs
• https://github.com/epigen/spilterlize_integrate
• https://github.com/epigen/dea_limma
• https://github.com/epigen/genome_tracks
• https://github.com/epigen/enrichment_analysis
• https://github.com/epigen/scrnaseq_processing_seurat
• https://github.com/epigen/dea_seurat
• https://github.com/epigen/mixscape_seurat