Implement trusted types url setter (#36596)

We now check the sink of script.src for trusted types. This is the first
attribute that we check, other sinks will be implemented in follow-up
changes.

The algorithms currently hardcode various parts. That's because I need
to refactor a couple of algorithms already present in TrustedTypePolicy.
They use callbacks at the moment, which made sense for their initial
use. However, for these new algorithms they don't work. Therefore, I
will align them with the specification by taking in an enum. However,
since that's a bigger refactoring, I left that out of this PR (which is
already quite big).

The other trusted types support (createScript and createHTML) will also
be implemented separately.

Part of #36258

---------

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
Signed-off-by: Tim van der Lippe <TimvdLippe@users.noreply.github.com>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>

components/script/dom/trustedscripturl.rs

@@ -2,6 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
+use std::fmt;
+
 use dom_struct::dom_struct;
 
 use crate::dom::bindings::codegen::Bindings::TrustedScriptURLBinding::TrustedScriptURLMethods;
@@ -32,6 +34,13 @@ impl TrustedScriptURL {
     }
 }
 
+impl fmt::Display for TrustedScriptURL {
+    #[inline]
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.write_str(&self.data)
+    }
+}
+
 impl TrustedScriptURLMethods<crate::DomTypeHolder> for TrustedScriptURL {
     /// <https://www.w3.org/TR/trusted-types/#trustedscripturl-stringification-behavior>
     fn Stringifier(&self) -> DOMString {