ISSUE-14393: [Website + Doc] generate connector configuration info automatically

[sijie]

Original Issue: apache#14393

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When updating docs for apache#14383, @fantapsody suggests generating connector configuration tables automatically rather than updating them manually.

I've discussed w/ @urfreespace, he thinks it is workable. For example:

For the configuration table of the Elasticsearch sink connector, we can get this info from the source code file (ElasticSearchConfig.java)

One thing we need to consider is how to display the info.
@urfreespace believes we can generate independent web pages for each connector configuration info (as below), but it's too redundant to show all info connector configuration on the Pulsar home page. We need to figure out the best way to show the info.

Anyone would like to help? Thanks!