feat: Implement Bitwise and Shift Operator Support (#496)

Co-authored-by: Ganesan Karuppasamy <[email protected]>

parser/parser_test.go

@@ -5,10 +5,11 @@ import (
 	"strings"
 	"testing"
 
-	. "github.com/expr-lang/expr/ast"
-	"github.com/expr-lang/expr/parser"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	. "github.com/expr-lang/expr/ast"
+	"github.com/expr-lang/expr/parser"
 )
 
 func TestParse(t *testing.T) {