feat: Add manual parquet testing for deephaven-core-test-data

[devinrsmith]

This is manual testing in support of #1007. Currently assumes that the repository https://github.com/deephaven/deephaven-core-test-data is checked out on the local filesystem.

[malhotrashivam]

I had no idea this data existed. I am glad these tests are not failing after all the changes we have been making.

Re-ran these on my machine too and all passed.

On a side note (and not necessarily your responsibility for this PR), I know there is also test data in https://github.com/deephaven/examples for parquet. I usually test against that. This is my test script that I usually use

from deephaven import parquet

a = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/Pems/parquet/pems/").select()

b = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/CryptoCurrencyHistory/Parquet/crypto_sept8.parquet").select()

c = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/CryptoCurrencyHistory/Parquet/CryptoTrades_20210922.parquet").select()

d = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/CryptoCurrencyHistory/Parquet/crypto.parquet").select()

e = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/CryptoCurrencyHistory/Parquet/crypto_sept7.parquet").select()

f = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/CryptoCurrencyHistory/Parquet/FakeCryptoTrades_20230209.parquet").select()

g = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/Taxi/parquet/taxi.parquet").select()

h = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/SensorData/parquet/SensorData_gzip.parquet").select()

i = parquet.read("/Users/shivammalhotra/deephaven/projects/deephaven-examples/Taxi/parquet").select()

Do you think we should add similar tests like this file for data in deephaven-examples?

[devinrsmith]

I think adding a similar test to what I've done here would be reasonable. Long term we would like it to be more automated, but happy to take smaller manual steps towards that goal.

[malhotrashivam]

I can do this part then.