Add support for todo component (#18289)

src/common/const.ts

@@ -16,6 +16,7 @@ import {
   mdiCarCoolantLevel,
   mdiCash,
   mdiChatSleep,
+  mdiClipboardCheck,
   mdiClock,
   mdiCloudUpload,
   mdiCog,
@@ -120,6 +121,7 @@ export const FIXED_DOMAIN_ICONS = {
   siren: mdiBullhorn,
   stt: mdiMicrophoneMessage,
   text: mdiFormTextbox,
+  todo: mdiClipboardCheck,
   time: mdiClock,
   timer: mdiTimerOutline,
   tts: mdiSpeakerMessage,