message: Add overlay to avatar
diff: }
  .Avatar__children,
  -.Avatar--shadow::after {
  +.Avatar--shadow::after,
  +.Avatar--overlay::before {
  position: absolute;
  left: 0;
  top: 0;
  box-shadow: inset 0 0 0 var(--thin-border) var(--image_border);
  }
  +.Avatar.Avatar--overlay {
  + cursor: pointer;
  +}
  +
  +.Avatar--overlay::before {
  + content: "";
  + z-index: 1;
  + opacity: 0;
  + transition: opacity 0.3s;
  +}
  +
  +.Avatar--overlay:hover::before,
  +.Avatar--overlay--always::before,
  +.Avatar--overlay:hover .Avatar__overlay_icon,
  +.Avatar--overlay--always .Avatar__overlay_icon {
  + opacity: 1;
  +}
  +
  +.Avatar--overlay--white::before {
  + background-color: rgba(255, 255, 255, 0.85);
  +}
  +
  +.Avatar--overlay--black::before {
  + background-color: rgba(0, 0, 0, 0.6);
  +}
  +
  +.Avatar__overlay_icon {
  + position: absolute;
  + z-index: 1;
  + top: 50%;
  + left: 50%;
  + opacity: 0;
  + transform: translate(-50%, -50%);
  + transition: opacity 0.3s;
  +}
  +
  .Avatar__children {
  display: flex;
  align-items: center;
  