Feat/easybuild to apptainer + README/setupy.py adjustments

[SietsmaRJ]

SOP

Changed

• Changed the dependency of "BCFTools" to be installed to "apptainer" .
• Changed the working of the conversion script to now work with apptainer.
• Small QoL github templates improvements.
• Updated github templates [edit by @svandenhoek]

Important notes

-

Before merge:

• [ ] Functionality works & meets specs
• [ ] No Travis issues
• [ ] Code reviewed
• [ ] Documentation was updated

After merge:

• [ ] Added feature/fix to draft release notes
• [ ] Removed merged branches

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

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[svandenhoek]

Renamed PR from Feat/ezbuild to singularity to Feat/easybuild to apptainer + README/setupy.py adjustments