add .sh helpers for singularity on the ccin2p3

src/singularity_modules/bcftools/1.7/bcftools

src/singularity_modules/bedtools/2.25.0/bedtools

src/singularity_modules/bioawk/1.0/bioawk

src/singularity_modules/bowtie/1.2.2/bowtie

src/singularity_modules/bowtie2/2.3.4.1/bowtie2

src/singularity_modules/bwa/0.7.17/bwa

src/singularity_modules/canu/1.6/canu

src/singularity_modules/cutadapt/1.14/cutadapt

src/singularity_modules/cutadapt/1.15/cutadapt

src/singularity_modules/cutadapt/2.1/cutadapt

src/singularity_modules/deeptools/3.0.2/deeptools

src/singularity_modules/deeptools/3.1.1/deeptools

src/singularity_modules/fastp/0.19.7/fastp

src/singularity_modules/fastqc/0.11.5/fastqc

src/singularity_modules/file_handle/0.1.1/file_handle

src/singularity_modules/gatk/4.0.8.1/gatk

src/singularity_modules/hisat2/2.0.0/hisat2

src/singularity_modules/hisat2/2.1.0/hisat2

src/singularity_modules/htseq/0.11.2/htseq

src/singularity_modules/htseq/0.8.0/htseq