feat: compile Endor await expressions through the source pipeline

crates/compiler/src/analysis.rs

@@ -332,7 +332,9 @@ impl Builder {
                     binding,
                 });
             }
-            ExprKind::Unary { operand, .. } => self.expression(operand, globals)?,
+            ExprKind::Unary { operand, .. } | ExprKind::Await { operand } => {
+                self.expression(operand, globals)?
+            }
             ExprKind::Binary { left, right, .. } => {
                 self.expression(left, globals)?;
                 self.expression(right, globals)?;

crates/compiler/src/codegen.rs

@@ -300,6 +300,10 @@ impl<'a> Emitter<'a> {
                 }
                 self.emit(Opcode::Call, arguments.len())?;
             }
+            ExprKind::Await { operand } => {
+                self.expression(operand)?;
+                self.simple(Opcode::Await);
+            }
             ExprKind::Member { object, name } => {
                 self.expression(object)?;
                 self.emit(Opcode::LoadAttr, self.name_index(&name.text))?;