Dashboard: New experimental time range zoom shortcuts (#114190)

* feat(toggle): new feature toggle for time range zoom keyboard shortcuts

* feat(keyboard-shortcuts): handle `t +` and `t -` key combinations

* test(keyboard-shortcuts): validate time range zoom with `t +`, and `t -`

* chore(i18n): update keyboard shortcut translations

* refactor(time-range): no-op when timespan is zero instead of defaulting

packages/grafana-data/src/types/featureToggles.gen.ts

@@ -669,6 +669,10 @@ export interface FeatureToggles {
   */
   timeRangePan?: boolean;
   /**
+  * Enables new keyboard shortcuts for time range zoom operations
+  */
+  newTimeRangeZoomShortcuts?: boolean;
+  /**
   * Disables the log limit restriction for Azure Monitor when true. The limit is enabled by default.
   * @default false
   */