feat(core) deno_core::extension! macro to simplify extension registration (#18210)

This implements two macros to simplify extension registration and centralize a lot of the boilerplate as a base for future improvements:

* `deno_core::ops!` registers a block of `#[op]`s, optionally with type
parameters, useful for places where we share lists of ops
* `deno_core::extension!` is used to register an extension, and creates
two methods that can be used at runtime/snapshot generation time:
`init_ops` and `init_ops_and_esm`.

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

cli/lsp/testing/execution.rs

@@ -165,7 +165,11 @@ async fn test_specifier(
       &ps,
       specifier.clone(),
       PermissionsContainer::new(permissions),
-      vec![ops::testing::init(sender, fail_fast_tracker, filter)],
+      vec![ops::testing::deno_test::init_ops(
+        sender,
+        fail_fast_tracker,
+        filter,
+      )],
       Stdio {
         stdin: StdioPipe::Inherit,
         stdout,