feat: add channels capabilities command

src/commands/channels.ts

@@ -1,5 +1,7 @@
 export type { ChannelsAddOptions } from "./channels/add.js";
 export { channelsAddCommand } from "./channels/add.js";
+export type { ChannelsCapabilitiesOptions } from "./channels/capabilities.js";
+export { channelsCapabilitiesCommand } from "./channels/capabilities.js";
 export type { ChannelsListOptions } from "./channels/list.js";
 export { channelsListCommand } from "./channels/list.js";
 export type { ChannelsLogsOptions } from "./channels/logs.js";