feat: add taskbar flashing on new notifications (#1209)

Co-authored-by: V <vendicated@riseup.net>

src/shared/IpcEvents.ts

@@ -36,6 +36,7 @@ export const enum IpcEvents {
     SPELLCHECK_ADD_TO_DICTIONARY = "VCD_SPELLCHECK_ADD_TO_DICTIONARY",
 
     SET_BADGE_COUNT = "VCD_SET_BADGE_COUNT",
+    FLASH_FRAME = "FLASH_FRAME",
 
     CAPTURER_GET_LARGE_THUMBNAIL = "VCD_CAPTURER_GET_LARGE_THUMBNAIL",
 

src/shared/settings.d.ts

@@ -20,6 +20,7 @@ export interface Settings {
     hardwareVideoAcceleration?: boolean;
     arRPC?: boolean;
     appBadge?: boolean;
+    enableTaskbarFlashing?: boolean;
     disableMinSize?: boolean;
     clickTrayToShowHide?: boolean;
     customTitleBar?: boolean;