Add initial IGV_HaplotypeViz WDL workflow for generating IGV screenshots

[shadizaheri]

Summary:
Adding initial IGV_HaplotypeViz WDL to generate IGV screenshots.

• Introduced the IGV_HaplotypeViz workflow to automate IGV screenshot generation
• Supports both BAM/BAI file alignment and haplotype bam files sequence visualizations
• Output IGV screenshots for specified regions in the input BED files
• Compared to the [IGV-snapshot-automator] (https://github.com/stevekm/IGV-snapshot-automator/tree/master) and GATK-SV IGVSingleGenomeScatter workflow, this workflow allows flexibility in BED file formats and includes support for sequence visualizations with haplotype files.