feat: add support for table partitioning

[ErdemGKSL]

Summary

This PR adds support for table partitioning to the TableCreateStatement fluent API, with implementations for both PostgreSQL and MySQL backends.

Changes

• Introduced PartitionBy, PartitionValues, and PartitionDefinition to represent partitioning strategies and values.
• Extended TableCreateStatement with partitioning methods.
• Implemented SQL generation logic in PostgresQueryBuilder and MysqlQueryBuilder.
• Updated TableBuilder trait to include partitioning hooks in prepare_table_create_statement.

Verification

• Added comprehensive unit tests in tests/postgres/table.rs and tests/mysql/table.rs.
• All tests passed locally with cargo test --all-features.
• Formatting and Clippy checks passed.

Usage Example (PostgreSQL)

let sql = Table::create()
    .table(Glyph::Table)
    .col(ColumnDef::new(Glyph::Id).integer().not_null())
    .col(ColumnDef::new(Glyph::Aspect).integer().not_null())
    .partition_by_range([Glyph::Aspect])
    .to_string(PostgresQueryBuilder);

assert_eq!(sql, r#\"CREATE TABLE \"glyph\" ( \"id\" integer NOT NULL, \"aspect\" integer NOT NULL ) PARTITION BY RANGE (\"aspect\")\"#);

let sql = Table::create()
    .table(Alias::new(\"glyph_1\"))
    .partition_of(Glyph::Table)
    .values_from_to([1], [10])
    .to_string(PostgresQueryBuilder);

assert_eq!(sql, r#\"CREATE TABLE \"glyph_1\" PARTITION OF \"glyph\" FOR VALUES FROM (1) TO (10)\"#);

[Huliiiiii]

LGTM! The only thing left is to replace SimpleExpr with Expr. SimpleExpr is the old API and might be deprecated someday.

[ErdemGKSL]

@Huliiiiii is this okay?

[LockedThread]

This looks great and I have been looking forward to this feature for years.

[ErdemGKSL]

Hi @tyt2y3, just checking in on this when you have a moment. Tests are green and it’s had one look already... lmk if you think it needs any changes to better fit the codebase.