feat: add Misc submenu

mapper/src/App.js

@@ -363,6 +363,15 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider, submenu, s
 							)}
 						</>
 					}
+
+					{submenu === 'misc' &&
+						<>
+							<div className='submenu-header'>
+								<h2>Misc</h2>
+								<button onClick={() => setSubmenu(false)}>×</button>
+							</div>
+						</>
+					}
 				</div>
 			}
 
@@ -376,6 +385,13 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider, submenu, s
 					{moment(end).subtract(duration.delta[0], duration.delta[1]).format('ddd MMM DD')}
 				</button>
 
+				<button
+					onClick={() => setSubmenu('misc')}
+					className={submenu === 'misc' ? 'active' : ''}
+				>
+					☰
+				</button>
+
 				<button
 					onClick={() => setSubmenu('duration')}
 					className={submenu === 'duration' ? 'active' : ''}