Update bifrostlib for samplecomponents to reflect schema2.0 and beyond, right now its more hardcoded for snakemake purposes

[kimleeng]

Bifrostlib is part way through updating. Was thinking that each main object needs a class and that it should be updated accordingly. Also when the schema validation goes in ideally the entry can be checked against multiple schemas which may mean 2 versions of the same function. Sample, Category, Run, are mostly done converting (to the current form but needs json validation) while things like Components, SampleComponents need to be redone.