feat: add PercentageAxisUpToHundred convenience axis (#505)

Useful for graphs where it'd go up to 100% but we want to see dips in it
that might otherwise be difficult to see if the axis was 0 to 100 (like
availability).

---

_By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache-2.0 license_

lib/common/widget/axis.ts

@@ -19,6 +19,15 @@ export const PercentageAxisFromZeroToHundred: YAxisProps = {
   showUnits: false,
 };
 
+/**
+ * Y-Axis showing percentage, ranged up to 100.
+ */
+export const PercentageAxisUpToHundred: YAxisProps = {
+  max: 100,
+  label: "%",
+  showUnits: false,
+};
+
 /**
  * Y-Axis showing time in milliseconds, ranged from 0.
  */