Script: Implement TextDecoderStream (#38112)

This PR implements the `TextDecoderStream`. Other than introducing the
necessary mod and webidl files corresponding to `TextDecoderStream`,
this PR also involves some changes in `TextDecoder` and
`TrasnformStream`:

- The common part that can be shared between `TextDecoder` and
`TextDecoderStream` are extracted into a separate type
`script::dom::textdecodercommon::TextDecoderCommon`. This type could
probably use a different name because there is an interface called
`TextDecoderCommon` in the spec
(https://encoding.spec.whatwg.org/#textdecodercommon) which just gets
included in `TextDecoder` and `TextDecoderStream`.
- The three algorithms in `TransformStream` (`cancel`, `flush`, and
`transform`) all have become `enum` that has a `Js` variant for a JS
function object and a `Native` variant for a rust trait object. Whether
the cancel algorithm needs this enum type is debatable as I did not find
any interface in the spec that explicitly sets the cancel algorithm.

Testing: Existing WPT tests `tests/wpt/tests/encoding/stream` should be
sufficient
Fixes: #37723

---------

Signed-off-by: minghuaw <michael.wu1107@gmail.com>
Signed-off-by: minghuaw <wuminghua7@huawei.com>
Signed-off-by: Minghua Wu <michael.wu1107@gmail.com>

components/script/dom/mod.rs

@@ -590,6 +590,8 @@ pub(crate) mod testworkletglobalscope;
 pub(crate) mod text;
 pub(crate) mod textcontrol;
 pub(crate) mod textdecoder;
+pub(crate) mod textdecodercommon;
+pub(crate) mod textdecoderstream;
 pub(crate) mod textencoder;
 pub(crate) mod textmetrics;
 pub(crate) mod texttrack;