Upgrade to uniffi 0.32.0, support zero copy bytes

[skeet70]

This is a breaking change for by ref bytes from byte[] to ByteBuffer, and to the config setup. See the CHANGELOG for more info.

A lot of the churn in this PR is due to upgrading Askama to 0.16.0 to match upstream.

Benches showed the zero-copy byte path is 3 to 20x faster than what we had before, so we'll likely make a breaking ironcore-alloy release to switch the API over to them (in addition to the benefit that provides direct Rust callers).

[coltfred]

fully_qualified_type_label needs a Type::Set arm so that the set type is fully qualified.

I added a test that fails currently. If you'd like to test it some other way, I'm good with that. Just wanted to show it broke

[github-actions]

File	Coverage	Lines
All files	91%	91%	✅
src/lib.rs	58%	58%	✅
src/gen_java/mod.rs	93%	93%	✅

Minimum allowed coverage is 0%

Generated by 🐒 cobertura-action against 991a66f

[skeet70]

@coltfred fixed and also split Types up and had rust dispatch the template generation for each of them. Build went from 10 GB memory and 112 s incremental compile with 960 s for the integration tests to 401 MB, 3 s, 71s on my machine. From the checks that just ran here it looks like it way sped up cold CI builds too.

Checked the output before and after for test files and its the same both ways. Should be all good now.