refactor: split catalog to smaller files

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What's changed and what's your intention?

just split the funcs into files, no logic change

Checklist

• I have written necessary rustdoc comments.
• I have added necessary unit tests and integration tests.
• I have added test labels as necessary.
• I have added fuzzing tests or opened an issue to track them.
• My PR contains breaking changes.
• My PR changes performance-critical code, so I will run (micro) benchmarks and present the results.
• My PR contains critical fixes that are necessary to be merged into the latest release.

Documentation

• My PR needs documentation updates.

Release note

[github-actions]

license-eye has checked 5519 files.

Valid	Invalid	Ignored	Fixed
2325	3	3191	0

Click to see the invalid file list

• src/meta/src/controller/catalog/alter_op.rs
• src/meta/src/controller/catalog/drop_op.rs
• src/meta/src/controller/catalog/util.rs

Use this command to fix any missing license headers

```bash

docker run -it --rm -v $(pwd):/github/workspace apache/skywalking-eyes header fix

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