Using clause in $.arguments

Problem
-------
Scala 3 introduced using clauses to function call expressions:
```scala
f(using A)
```
The grammar did not allow that

Solution
-------
Add `choice` between regular and using-clause argument lists in
`$.arguments`

corpus/expressions.txt

@@ -89,6 +89,31 @@ class C {
                     (wildcard)))
                 (identifier)))))))))
 
+================================================================================
+Call expressions (Scala 3 syntax)
+================================================================================
+
+class C {
+  a(b, c)(using A.B)
+}
+
+--------------------------------------------------------------------------------
+
+(compilation_unit
+  (class_definition
+    (identifier)
+    (template_body
+      (call_expression
+        (call_expression
+          (identifier)
+          (arguments
+            (identifier)
+            (identifier)))
+        (arguments
+          (field_expression
+            (identifier)
+            (identifier)))))))
+
 ================================================================================
 SIP-44 Fewer braces (Scala 3 syntax)
 ================================================================================

grammar.js

@@ -1173,12 +1173,22 @@ module.exports = grammar({
       ']'
     ),
 
-    arguments: $ => seq(
+    arguments: $ => 
+    seq(
       '(',
-      trailingCommaSep($.expression),
+      choice(
+        optional($._exprs_in_parens),
+        seq(
+          'using',
+          $._exprs_in_parens,
+        ),
+      ),
       ')'
     ),
 
+    // ExprsInParens     ::=  ExprInParens {‘,’ ExprInParens}
+    _exprs_in_parens: $ => trailingCommaSep1($.expression),
+
     splice_expression: $ => prec.left(PREC.macro, seq(
       '$',
       choice(