sqlite: support CTEs for INSERT / UPDATE / DELETE #4171
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issue sqlc-dev#2989, sqlc-dev#2400 and probably others
Fixed resolving refs to CTEs by adding CTEs to the aliasMap and indexing its columns when resolving catalog references. Fix sqlc-dev#3219
I've checked each of them, and it seems correct those fields lose their nullability
CTE handling differs slighlty between SELECT and other kinds of statements, as SELECT grammar uses a `common_table_stmt` token, while other DML statements use a `with_clause` token
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CTE handling differs slighlty between
SELECTand other kinds of statements, asSELECTgrammar uses acommon_table_stmttoken, while other DML statements use awith_clausetoken