feat: disable specifying copy options when create stage.

[youngsofun]

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Summary

Overview

copy options clauses are no longer allowed in create stage stmt

motivation

1. (main) it is not clear and error prone to set copy options when create stage, which intended to serve as default value of copy related to this stage.
2. it is a burden to maintain copy options in meta.
3. it is bad to put both load and unload options in one struct.

Impact

1. the only breaking change is that copy options clauses are no longer allowed in create stage stmt, I guess no one had ever use this.
2. old stages with copy options can still be used as before, because the options does not take effect at all (covered by copy options from copy stmt, which is parsed with struct default values).

fixes: #(#16910)

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[BohuTANG]

The summary is not cleary that what's changed in this PR?

[youngsofun]

The summary is not cleary that what's changed in this PR?

updated