feat(frontend): add StreamProjectMaterialize PlanNode

[jon-chuang]

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What's changed and what's your intention?

Add StreamProjectMaterialize PlanNode

Checklist For Contributors

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• I have demonstrated that backward compatibility is not broken by breaking changes and created issues to track deprecated features to be removed in the future. (Please refer to the issue)
• All checks passed in ./risedev check (or alias, ./risedev c)

Documentation

• My PR DOES NOT contain user-facing changes.

References

risingwavelabs/rfcs#24

[codecov]

Codecov Report

Merging #8843 (6fda714) into main (81b306b) will decrease coverage by 0.07%.
The diff coverage is 1.36%.

@@            Coverage Diff             @@
##             main    #8843      +/-   ##
==========================================
- Coverage   70.82%   70.75%   -0.07%     
==========================================
  Files        1172     1173       +1     
  Lines      194486   194618     +132     
==========================================
- Hits       137736   137700      -36     
- Misses      56750    56918     +168     

Flag	Coverage Δ
rust	70.75% <1.36%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/frontend/src/optimizer/plan_node/mod.rs	92.99% <ø> (ø)
...optimizer/plan_node/stream_project_materialized.rs	0.00% <0.00%> (ø)
src/stream/src/from_proto/mod.rs	0.00% <ø> (ø)
...rontend/src/optimizer/plan_node/logical_project.rs	97.76% <100.00%> (-0.11%)	⬇️

... and 10 files with indirect coverage changes

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[jon-chuang]

Note for review: we already do project merge rule

[xxchan]

Hmmm, although there aren't any objections, I think we should mark risingwavelabs/rfcs#24 as accepted first to make sure consensus is reached.

[jon-chuang]

as accepted first to make sure consensus is reached.

Agreed on waiting, I decided to get the ball rolling as I think the consensus is more or less in this direction - hoping to get it sooner as I'd like this feature for my demo :)

[st1page]

as accepted first to make sure consensus is reached.

Agreed on waiting, I decided to get the ball rolling as I think the consensus is more or less in this direction - hoping to get it sooner as I'd like this feature for my demo :)

I agree that this PR can achieve that with minimal invasiveness and easy to revert it... So I think I will be glad to approve it if it is really urgent. But at least, I think we need to add warnings to users "it is an experimental feature" when we write a UDF on an updatable stream.

[jon-chuang]

But at least, I think we need to add warnings to users "it is an experimental feature" when we write a UDF on an updatable stream.

Agreed.

[github-actions]

This PR has been open for 60 days with no activity. Could you please update the status? Feel free to ping a reviewer if you are waiting for review.