feat(unstable): Implement QUIC (#21942)

Implements a QUIC interface, loosely based on the WebTransport API (a
future change could add the WebTransport API, built on top of this one).

[quinn](https://docs.rs/quinn/latest/quinn/) is used for the underlying
QUIC implementation, for a few reasons:
- A cloneable "handle" api which fits quite nicely into deno resources.
- Good collaboration with the rust ecosystem, especially rustls.
- I like it.

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runtime/fmt_errors.rs

@@ -422,6 +422,20 @@ fn get_suggestions_for_terminal_errors(e: &JsError) -> Vec<FixSuggestion> {
           "Run again with `--unstable-webgpu` flag to enable this API.",
         ),
       ];
+    } else if msg.contains("listenQuic is not a function") {
+      return vec![
+        FixSuggestion::info("listenQuic is an unstable API."),
+        FixSuggestion::hint(
+          "Run again with `--unstable-net` flag to enable this API.",
+        ),
+      ];
+    } else if msg.contains("connectQuic is not a function") {
+      return vec![
+        FixSuggestion::info("connectQuic is an unstable API."),
+        FixSuggestion::hint(
+          "Run again with `--unstable-net` flag to enable this API.",
+        ),
+      ];
     // Try to capture errors like:
     // ```
     // Uncaught Error: Cannot find module '../build/Release/canvas.node'