[refactor](Coordinator) refactor coordinator

[924060929]

Proposed changes

Use NereidsSqlCoordinator instead of Coordinator because the code of Coordinator is too hard to maintaining

TODO: use NereidsLoadCoordinator for StreamLoad/BrokerLoad...

[doris-robot]

Thank you for your contribution to Apache Doris. Don't know what should be done next? See How to process your PR

Since 2024-03-18, the Document has been moved to doris-website. See Doris Document.

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[doris-robot]

TeamCity be ut coverage result: Function Coverage: 37.46% (9709/25916) Line Coverage: 28.75% (80635/280504) Region Coverage: 28.19% (41708/147970) Branch Coverage: 24.77% (21215/85638) Coverage Report: http://coverage.selectdb-in.cc/coverage/b0d8dee255cb2b7c2a959ef55647929ef653200e_b0d8dee255cb2b7c2a959ef55647929ef653200e/report/index.html

[924060929]

run buildall

[924060929]

run buildall

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall

[924060929]

run buildall