👯 ✨Copy Number and Expression Refactor

Copy number and RNA expression transformation have been revamped

• CN now governed by one script, with config determining order of preference based on data availability (i.e., use CNVkit for WXS if there, then ControlFreeC, etc)
• Expression now normalized by library type when available and against a healthy reference when available
• Docs updated to reflect changes

What's Changed

• 🔧 SOP cleanup by @wongjessica93 in #85
• ✨GATK CNV Support by @migbro in #86
• 🔧 Updates for when dgd status == 'dgd' by @wongjessica93 in #87
• 👬 Update CNV by @migbro in #89
• 🔧 Incorporate New RNAseq z-score into ETL by @wongjessica93 in #88
• Adding/updating RNA z-score doc by @wongjessica93 in #90

Full Changelog: v2.2.2...v2.3.0