Add g+e keyboard shortcut for /explore (trending) (#38014)

app/javascript/mastodon/features/keyboard_shortcuts/index.jsx

@@ -134,6 +134,10 @@ class KeyboardShortcuts extends ImmutablePureComponent {
                 <td><kbd>g</kbd>+<kbd>h</kbd></td>
                 <td><FormattedMessage id='keyboard_shortcuts.home' defaultMessage='to open home timeline' /></td>
               </tr>
+              <tr>
+                <td><kbd>g</kbd>+<kbd>e</kbd></td>
+                <td><FormattedMessage id='keyboard_shortcuts.explore' defaultMessage='to open trending timeline' /></td>
+              </tr>
               <tr>
                 <td><kbd>g</kbd>+<kbd>n</kbd></td>
                 <td><FormattedMessage id='keyboard_shortcuts.notifications' defaultMessage='to open notifications column' /></td>

app/javascript/mastodon/features/ui/index.jsx

@@ -534,6 +534,10 @@ class UI extends PureComponent {
     this.props.history.push('/home');
   };
 
+  handleHotkeyGoToExplore = () => {
+    this.props.history.push('/explore');
+  };
+
   handleHotkeyGoToNotifications = () => {
     this.props.history.push('/notifications');
   };
@@ -595,6 +599,7 @@ class UI extends PureComponent {
       moveToTop: this.handleMoveToTop,
       back: this.handleHotkeyBack,
       goToHome: this.handleHotkeyGoToHome,
+      goToExplore: this.handleHotkeyGoToExplore,
       goToNotifications: this.handleHotkeyGoToNotifications,
       goToLocal: this.handleHotkeyGoToLocal,
       goToFederated: this.handleHotkeyGoToFederated,