feat: add shortcut for breathing exercise

src/components/menu/items/breathing-exercise.tsx

@@ -1,4 +1,4 @@
-import { MdOutlineTimer } from 'react-icons/md/index';
+import { IoMdFlower } from 'react-icons/io/index';
 
 import { Item } from '../item';
 
@@ -9,7 +9,7 @@ interface BreathingExerciseProps {
 export function BreathingExercise({ open }: BreathingExerciseProps) {
   return (
     <Item
-      icon={<MdOutlineTimer />}
+      icon={<IoMdFlower />}
       label="Breathing Exercise"
       shortcut="Shift + B"
       onClick={open}

src/components/menu/menu.tsx

@@ -76,6 +76,7 @@ export function Menu() {
   useHotkeys('shift+n', () => open('notepad'));
   useHotkeys('shift+p', () => open('pomodoro'));
   useHotkeys('shift+c', () => open('countdownTimer'));
+  useHotkeys('shift+b', () => open('breathingExercise'));
   useHotkeys('shift+alt+p', () => open('presets'));
   useHotkeys('shift+h', () => open('shortcuts'));
   useHotkeys('shift+s', () => open('shareLink'), { enabled: !noSelected });

src/components/modals/shortcuts/shortcuts.tsx

@@ -29,6 +29,10 @@ export function ShortcutsModal({ onClose, show }: ShortcutsModalProps) {
       keys: ['Shift', 'P'],
       label: 'Pomodoro Timer',
     },
+    {
+      keys: ['Shift', 'B'],
+      label: 'Breathing Exercise',
+    },
     {
       keys: ['Shift', 'C'],
       label: 'Countdown Timer',