feat(cli): add inkreach-teable plugin commands

plugin list: list registered plugins (id/name/status/runtimeType)
plugin register: register by URL (--name --url --positions)
plugin config list: list base configs (pluginId/tableId/enabled/form/write)
plugin config enable/disable: enable/disable per table or base-wide

Added 5 client methods: getPlugins, registerPlugin, listPluginConfigs,
upsertPluginConfig for CRUD.

src/bin.ts

@@ -6,6 +6,7 @@
  */
 import { Command } from 'commander';
 import { version } from '../package.json';
+import { pluginCommand } from './commands/plugin';
 import { authCommand } from './commands/auth';
 import { workflowCommand, triggerCommand, actionCommand } from './commands/workflow';
 import { baseResourceCommands } from './commands/resources';
@@ -31,6 +32,7 @@ program
 
 // Command groups
 program.addCommand(authCommand());
+program.addCommand(pluginCommand());
 for (const c of baseResourceCommands()) program.addCommand(c);
 program.addCommand(workflowCommand());
 program.addCommand(triggerCommand());