fix(striker-ui): consolidate string padding

striker-ui/lib/pad.ts

@@ -0,0 +1,14 @@
+const pad = (
+  value: unknown,
+  {
+    fillString = '0',
+    maxLength = 2,
+    which = 'Start',
+  }: {
+    fillString?: string;
+    maxLength?: number;
+    which?: 'Start' | 'End';
+  } = {},
+): string => String(value)[`pad${which}`](maxLength, fillString);
+
+export default pad;