init - add project files

vendor/github.com/go-jet/jet/v2/internal/utils/is/is.go

@@ -0,0 +1,8 @@
+package is
+
+import "reflect"
+
+// Nil check if v is nil
+func Nil(v interface{}) bool {
+	return v == nil || (reflect.ValueOf(v).Kind() == reflect.Ptr && reflect.ValueOf(v).IsNil())
+}