Add PulsarTableViewFactory for creating table views

[sharanggupta]

Resolves #503

This adds the TableViewFactory that was discussed on the issue as the first step for TableView support, following the shape of PulsarReaderFactory / DefaultPulsarReaderFactory.

What it adds

• PulsarTableViewFactory<T> with createTableView(topic, schema, customizers), and DefaultPulsarTableViewFactory<T>: the TableViewBuilderCustomizers of the default configuration are applied to every table view, the customizers passed in to that single table view (applied last, like the reader factory), a topic passed in overrides the one of the default configuration, non-fully-qualified topic names are qualified when a PulsarTopicBuilder is set, and a PulsarClientException is wrapped in a PulsarException.
• TableViewBuilderCustomizer<T>, the counterpart of ReaderBuilderCustomizer.
• A "Pulsar TableView Support" section in the message consumption chapter, with the note that the caller closes the table view and that Spring Boot does not auto-configure the factory yet. If this goes in, I can follow up in Spring Boot with the PulsarTableViewFactory bean and spring.pulsar.table-view.* defaults next to the reader ones.

I did not include the @PulsarTableView annotation idea from the issue: the factory is the piece everything else builds on, and the annotation deserves its own discussion.

Testing

Developed test first: the new tests do not compile against main, and pass with the change.

• DefaultPulsarTableViewFactoryTests against the Pulsar Testcontainers broker: the table view holds the latest value per key, follows the topic after creation, and uses the topic of the factory defaults; a PulsarTopicBuilder qualifies the topic.
• DefaultPulsarTableViewFactoryUnitTests with a mocked PulsarClient: the default customizers, the topic and the call customizers are applied in that order, no topic is set when none is given, a PulsarClientException from create() is wrapped, and the schema is required.
• ./gradlew :spring-pulsar:check on JDK 25 with Docker: the new tests pass against apachepulsar/pulsar:4.2.0, as do checkFormat, Checkstyle and Javadoc. In that run, 27 reader and observation tests failed after the shared broker container stopped accepting connections partway through. I reran those packages on their own and they pass.