refactor: ipc handlers ts refactor

src/common/interfaces/workers.ts

@@ -0,0 +1,7 @@
+export type WorkerEvent = 'export-progress' | 'import-progress' | 'query-error' | 'end' | 'cancel' | 'error'
+
+export interface WorkerIpcMessage {
+   type: WorkerEvent;
+   // eslint-disable-next-line @typescript-eslint/no-explicit-any
+   payload: any;
+}