Changes made for consensus assignment pipeline

[sdentro]

Default functionality remains the same. I've merged the changes made for the consensus mutation assignment pipeline, which either add data to the output or have optional flags which are turned off by default.

• Updated loadBB to round or discard subclonal copy number (to make MutationTimer only consider its given mutation cluster locations)
• Added assignmnent probs to all clusters and allele counts to computeMcn output

[sdentro]

Will add further changes. Closing this request.