rfc: spark structured streaming sink and source platform

[cgpoh]

Summary by CodeRabbit

• New Features

  • Added support for specifying the data platform for Spark Structured Streaming sources and sinks via new configuration options, improving lineage capture for platforms without recognizable prefixes.
  • Introduced configuration to handle multiple streaming environments and platform instances within a single Spark application for better dataset URN distinction.

• Documentation

  • Updated documentation to describe the new configuration properties for platform specification in streaming sources and sinks.