Notification Add icon

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><path fill="currentColor" d="M11.997 21.385q-.668 0-1.14-.475q-.472-.474-.472-1.14h3.23q0 .67-.475 1.142q-.476.473-1.143.473ZM5 18.769v-1h1.615V9.846q0-1.96 1.24-3.447Q9.097 4.912 11 4.546V4q0-.417.291-.708q.291-.292.707-.292q.415 0 .709.292Q13 3.583 13 4v.537q.43.096.83.231q.397.135.749.344q-.662.817-1.015 1.819q-.352 1.002-.352 2.077q0 1.96 1.143 3.56q1.143 1.601 3.03 2.23v2.971H19v1H5ZM18.77 12.5v-3h-3v-1h3v-3h1v3h3v1h-3v3h-1Z"/></svg>