Add python binding for ZOrderCoveringIndexConfig

[sezruby]

What is the context for this pull request?

• Tracking Issue: n/a
• Parent Issue: [PROPOSAL]: ZOrderCoveringIndex #515
• Dependencies: n/a

What changes were proposed in this pull request?

Add python binding for ZOrderCoveringIndexConfig to create ZOrderCoveringIndex via python API.

Example:

from hyperspace import Hyperspace
from hyperspace import ZOrderCoveringIndexConfig
hs = Hyperspace(spark)
idxConfig = ZOrderCoveringIndexConfig("idxName", ['colA', 'colB'], ['colC'])
df = spark.read.parquet("path/to/data")
hs.createIndex(df, idxConfig)

Does this PR introduce any user-facing change?

Yes

How was this patch tested?

Added a python test