hide src/* files not necessary for users

src/.singularity_modules/cutadapt/1.15/cutadapt.def

src/.singularity_modules/cutadapt/2.1/build.sh

src/.singularity_modules/cutadapt/2.1/cutadapt

src/.singularity_modules/cutadapt/2.1/cutadapt.def

src/.singularity_modules/deeptools/3.0.2/build.sh

src/.singularity_modules/deeptools/3.0.2/deeptools

src/.singularity_modules/deeptools/3.0.2/deeptools.def

src/.singularity_modules/deeptools/3.1.1/build.sh

src/.singularity_modules/deeptools/3.1.1/deeptools

src/.singularity_modules/deeptools/3.1.1/deeptools.def

src/.singularity_modules/docker_to_singularity.sh

src/.singularity_modules/fastp/0.19.7/build.sh

src/.singularity_modules/fastp/0.19.7/fastp

src/.singularity_modules/fastp/0.19.7/fastp.def

src/.singularity_modules/fastqc/0.11.5/build.sh

src/.singularity_modules/fastqc/0.11.5/fastqc

src/.singularity_modules/fastqc/0.11.5/fastqc.def

src/.singularity_modules/file_handle/0.1.1/build.sh

src/.singularity_modules/file_handle/0.1.1/file_handle

src/.singularity_modules/file_handle/0.1.1/file_handle.def