feat: add standard options

src/locales/lang/en.ts

@@ -57,6 +57,14 @@ const msg = {
   graphStyles: "Graph styles",
   widgetOptions: "Widget options",
   standardOptions: "Standard options",
+  max: "Max",
+  min: "Min",
+  plus: "Plus",
+  minus: "Minus",
+  multiply: "Multiply",
+  divide: "Divide",
+  convertToMilliseconds: "Convert Unix Timestamp(milliseconds)",
+  convertToSeconds: "Convert Unix Timestamp(seconds)",
   hourTip: "Select Hour",
   minuteTip: "Select Minute",
   secondTip: "Select Second",