Support Window operators in decoupled planning

[kgyrtkirk]

Description

• move baseruleset into a separate program
  • it doesn't interfere with the conversion rules
  • there will be less states in the planner during the conversion
• enable scan&sort style queries to accept column reordings
• add Window related conversion/etc to enable it in decoupled mode
• added DecoupledTestConfig to specify per-testcase customization
  • currently its being used to describe why the native query is not checked

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This PR has:

• been self-reviewed.
  • using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.

[rohangarg]

LGTM - there have been a couple of plans which regressed but we can take up that effort later on.