Port QueryParser::copy to the new parser

[sgrif]

This is a strictly mechanical port other than some refactoring of tests to make switching the tests to the new parser easier

[codecov]

Codecov Report

❌ Patch coverage is 70.77922% with 45 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pgdog/src/frontend/router/parser/query/mod.rs	0.00%	26 Missing ⚠️
pgdog/src/frontend/router/parser/copy.rs	87.35%	11 Missing ⚠️
...src/backend/replication/logical/publisher/table.rs	0.00%	5 Missing ⚠️
...src/backend/replication/logical/subscriber/copy.rs	91.42%	3 Missing ⚠️

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