feature: @putout/plugin-promise: remove-useless-async: await using couple

Author: coderaiser

packages/plugin-promises/lib/remove-useless-async/fixture/using.js

@@ -1,3 +1,7 @@
 async (name, data) => {
     await using disk = createDisk(data);
 }
+
+const x = async (name, data) => {
+    await using baz = 3, qux = 4;
+}

packages/plugin-promises/lib/remove-useless-async/index.js

@@ -15,9 +15,25 @@ export const include = () => [
     'async (__args) => __body',
 ];
 
-export const filter = (path) => !contains(path, [
-    'throw __',
-    'await __',
-    'for await (__ of __) __',
-    'await using __ = __',
-]);
+export const filter = (path) => {
+    if (hasAwaitUsing(path))
+        return false;
+    
+    return !contains(path, ['throw __', 'await __', 'for await (__ of __) __']);
+};
+
+function hasAwaitUsing(path) {
+    let is = false;
+    
+    path.traverse({
+        VariableDeclaration(path) {
+            if (path.node.kind !== 'await using')
+                return;
+            
+            is = true;
+            path.stop();
+        },
+    });
+    
+    return is;
+}