feat: add generic Iceberg catalog adapter creation to Java / Python

[deephaven-internal]

This issue was auto-generated

PR: deephaven/deephaven-core#5754
Author: lbooker42

Original PR Body

Java, connecting to a RESTCatalog using MinIO

import io.deephaven.iceberg.util.*;

properties = new HashMap<>();
properties.put("type", "rest");
properties.put("uri", "http://rest:8181");

properties.put("client.region", "us-east-1");

properties.put("s3.access-key-id", "admin");
properties.put("s3.secret-access-key", "password");
properties.put("s3.endpoint", "http://minio:9000");

adapter = IcebergTools.createAdapter("generic-adapter", properties);

Python, connecting to a RESTCatalog using MinIO

from deephaven.experimental import iceberg

adapter = iceberg.adapter(name="generic-adapter", properties={
    "type" : "rest",
    "uri" : "http://rest:8181",
    "client.region" : "us-east-1",
    "s3.access-key-id" : "admin",
    "s3.secret-access-key" : "password",
    "s3.endpoint" : "http://minio:9000"
});

Java, connecting to AWS Glue

NOTE: credentials set in local environment

import io.deephaven.iceberg.util.*;

properties = new HashMap<>();
properties.put("type", "glue");
properties.put("uri", "s3://lab-warehouse/sales");

adapter = IcebergTools.createAdapter("generic-adapter", properties);

Python, connecting to AWS Glue

NOTE: credentials set in local environment

from deephaven.experimental import iceberg

adapter = iceberg.adapter(name="generic-adapter", properties={
    "type" : "glue",
    "uri" : "s3://lab-warehouse/sales",
    "warehouse" : "s3://lab-warehouse/sales",
});