Timer/blinking and blackout buttons (#406)

*feat: timer blink

*feat: blackout

---------

Co-authored-by: Fabian Posenau <fabian@fphome.de>
Co-authored-by: cv <34649812+cpvalente@users.noreply.github.com>

apps/client/src/features/control/message/MessageControl.module.scss

@@ -7,12 +7,18 @@
 }
 
 .onAirSection {
-  margin-top: $section-spacing;
   display: flex;
   flex-direction: column;
   gap: $element-spacing;
 }
 
+.buttonSection {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: $element-spacing;
+  margin-top: -0.5rem;
+}
+
 .label {
   font-size: $inner-section-text-size;
   color: $label-gray;
@@ -21,3 +27,7 @@
     color: $action-text-color;
   }
 }
+
+.padTop {
+  margin-top: $section-spacing;
+}