fix issues on elastic driver

[phenobarbital]

• Fix issues on elasticsearch driver
• added RedPanda (aiokafka) driver

Summary by Sourcery

Bump library version and streamline example PostgreSQL streaming script by removing the datatable-based example.

Enhancements:

• Remove the datatable streaming example from the PostgreSQL test script to focus on supported output backends.

Chores:

• Update the package version to 2.14.1.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates the PostgreSQL streaming example to drop the datatable dependency, bumps the asyncdb package version, and includes changes to the Elasticsearch driver and a new RedPanda (aiokafka) driver as described in the PR (details not fully visible in the diff).

Sequence diagram for producing a message via new RedPanda driver

sequenceDiagram
    actor Application
    participant RedPandaDriver
    participant AiokafkaProducer
    participant RedPandaCluster

    Application->>RedPandaDriver: connect(dsn)
    RedPandaDriver->>AiokafkaProducer: start()
    AiokafkaProducer-->>RedPandaDriver: producer_started
    RedPandaDriver-->>Application: connected

    Application->>RedPandaDriver: produce(topic, key, value)
    RedPandaDriver->>AiokafkaProducer: send(topic, key, value)
    AiokafkaProducer->>RedPandaCluster: append message to log
    RedPandaCluster-->>AiokafkaProducer: ack
    AiokafkaProducer-->>RedPandaDriver: send result
    RedPandaDriver-->>Application: result

    Application->>RedPandaDriver: close()
    RedPandaDriver->>AiokafkaProducer: stop()
    AiokafkaProducer-->>RedPandaDriver: stopped
    RedPandaDriver-->>Application: closed

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Class diagram for updated drivers including Elasticsearch and new RedPanda driver

classDiagram
    class BaseDriver {
        +str dsn
        +bool connected
        +connect()
        +close()
    }

    class ElasticDriver {
        +str hosts
        +str index
        +connect()
        +close()
        +search(query)
        +index_document(document_id, document)
        +update_document(document_id, document)
        +delete_document(document_id)
    }

    class RedPandaDriver {
        +str bootstrap_servers
        +str client_id
        +bool producer_started
        +bool consumer_started
        +connect()
        +close()
        +produce(topic, key, value)
        +consume(topic, group_id)
        +commit()
    }

    BaseDriver <|-- ElasticDriver
    BaseDriver <|-- RedPandaDriver

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File-Level Changes

Change	Details	Files
Remove datatable streaming example and dependency from the PostgreSQL streaming example script.	Delete datatable import and its parser import Remove the test_datatable async function that streamed results to a datatable.Frame and converted to pandas Stop referencing test_datatable in the main routine	examples/test_pg_stream.py
Bump library version for this release.	Increment asyncdb version from 2.14.0 to 2.14.1	asyncdb/version.py
Adjust Elasticsearch driver implementation and add a new RedPanda (aiokafka) driver as per PR description (exact code changes not visible).	Modify Elasticsearch driver behavior or bug fixes in elastic driver module Introduce or update RedPanda driver built on aiokafka for Kafka/RedPanda connectivity	asyncdb/drivers/elastic.py asyncdb/drivers/redpanda.py asyncdb/drivers/aiokafka.py

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[sourcery-ai]

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