Add support for AES-KW for key wrapping/unwrapping. Very similar
implementation to other AES modes.
Added generic tests for symmetric import and specific AES-KW ones.
Adds ~400 test passes on WPT. Now we do better than Firefox in
`WebCryptoAPI/wrapKey_unwrapKey`!
This implements the last WebCryptoAPI methods `wrapKey` and `unwrapKey`.
Most of the functionality is already there because they rely on
`encrypt` and `decrypt`. The only test failures are for `AES-GCM` which
is not implemented yet.
I dug through the code and the WebCryptoAPI spec to figure out the
reason for `... mixed case parameters` WPT tests and figured out that
our implementation was slightly wrong.
By being closer to the spec we can now pass those tests and also remove
a bunch of duplicated code.
Context: https://github.com/LadybirdBrowser/ladybird/pull/2598#discussion_r1859263798
Resulting in a massive rename across almost everywhere! Alongside the
namespace change, we now have the following names:
* JS::NonnullGCPtr -> GC::Ref
* JS::GCPtr -> GC::Ptr
* JS::HeapFunction -> GC::Function
* JS::CellImpl -> GC::Cell
* JS::Handle -> GC::Root
