refactor(ops): Adding op2 macro and implementing in a couple of places (#19534)

This is a new op system that will eventually replace `#[op]`. 

Features
 - More maintainable, generally less-coupled code
 - More modern Rust proc-macro libraries
- Enforces correct `fast` labelling for fast ops, allowing for visual
scanning of fast ops
 - Explicit marking of `#[string]`, `#[serde]` and `#[smi]` parameters.

This first version of op2 supports integer and Option<integer>
parameters only, and allows us to start working on converting ops and
adding features.

1 files changed, 6 insertions, 0 deletions

diff --git a/ops/op2/test_cases/sync/add_options.rs b/ops/op2/test_cases/sync/add_options.rs
new file mode 100644
index 000000000..a5f2c8f4a
--- /dev/null
+++ b/ops/op2/test_cases/sync/add_options.rs
@@ -0,0 +1,6 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+#[op2(core)]
+pub fn op_test_add_option(a: u32, b: Option<u32>) -> u32 {
+  a + b.unwrap_or(100)
+}