feat: add compile time composite key

[crwen]

What changes are included in this PR?

• Supports composite primary key
• generate {struct}Key and {struct}KeyRef at compile time
• implement Key and PkArray for {struct}Key; implement KeyRef for {struct}KeyRef

User can define composite primary key like this:

#[t::record(key(id, name))]
#[derive(Debug, Default)]
pub struct User {
    #[record(primary_key)]
    id: u64,
    #[record(primary_key)]
    name: String,
    age: u8,
}

[crwen]

I haven't found a good way to implement PkArray, I think we may need to reconsider how to implement the replacement.

[crwen]

This is an example of how to use a composite primary key

[codecov]

Codecov Report

❌ Patch coverage is 80.29279% with 175 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/record/typed.rs	76.11%	91 Missing ⚠️
tonbo_macros/src/lib.rs	70.79%	33 Missing ⚠️
tonbo_macros/src/typed_codegen.rs	91.36%	26 Missing ⚠️
tonbo_macros/src/data_type.rs	11.11%	24 Missing ⚠️
tonbo_macros/src/record.rs	98.21%	1 Missing ⚠️

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