feat: add slack multi-account routing

src/types/osc-progress.d.ts

@@ -0,0 +1,19 @@
+declare module "osc-progress" {
+  export type OscProgressController = {
+    setIndeterminate: (label: string) => void;
+    setPercent: (label: string, percent: number) => void;
+    clear: () => void;
+    done?: () => void;
+  };
+
+  export function createOscProgressController(params: {
+    env: NodeJS.ProcessEnv;
+    isTty: boolean;
+    write: (chunk: string) => void;
+  }): OscProgressController;
+
+  export function supportsOscProgress(
+    env: NodeJS.ProcessEnv,
+    isTty: boolean,
+  ): boolean;
+}