Tracking: speed up the logical optimizer

[xudong963]

I plan to speed up the logical optimizer from two aspects:

1. Try to reduce the optimization rounds by making each rule generate the best plan as much as possible
2. Optimize the single rule's plan time.

The issue mainly tracks a to-do list, and anyone interested in the topic can follow it.

• Speed up optimize_projection by improving is_projection_unnecessary #15761
• Improve push down limit (logical optimizer rule) #15744
• Improve simplify_expressions rule #15735
• Add a fast path for optimize_projection #15746
• Speed up optimize_projection #15787
• [ ] TBD

[xudong963]

After #15744, I'll close the tracking. Let's continue if we find the specific bottleneck