feat: add genetic ancestry fields for schema 5.3

[joyceyan]

Reason for Change

https://app.zenhub.com/workspaces/single-cell-5e2a191dad828d52cc78b028/issues/gh/chanzuckerberg/single-cell-curation/1114

Changes

adds all the genetic ancestry fields as well as related validation. i also updated example_valid.h5ad with:

X = anndata.read_h5ad("example_valid.h5ad")
X.obs["genetic_ancestry_African"] = float('nan')
X.obs["genetic_ancestry_East_Asian"] = float('nan')
X.obs["genetic_ancestry_European"] = float('nan')
X.obs["genetic_ancestry_Indigenous_American"] = float('nan')
X.obs["genetic_ancestry_Oceanian"] = float('nan')
X.obs["genetic_ancestry_South_Asian"] = float('nan')
X.write_h5ad("example_valid_new.h5ad")

Testing

• added new unit tests

Notes for Reviewer

[joyceyan]

i initially tried doing something like:

type: float
rule: genetic_ancestry_African >= 0 and genetic_ancestry_African <= 1 or genetic_ancestry_African == float('nan')

but i couldn't quite figure out how to get the NaN check to work correctly with the query syntax. so i just created a new genetic_ancestry_value type

[nayib-jose-gloria]

This looks good, but its missing validation for "All observations with the same donor_id MUST contain the same value." for each genetic_ancestry_*

[nayib-jose-gloria]

One suggestion, non-blocking. Implementation looks good!