feat: initial CLI structure

- init: create plugin boilerplate
- install: install from local path with deps
- list: show installed plugins
- validate: check manyplug.json syntax

bin/manyplug.js

@@ -0,0 +1,43 @@
+#!/usr/bin/env node
+
+import { program } from 'commander';
+import { createRequire } from 'module';
+import { initCommand } from '../src/commands/init.js';
+import { installCommand } from '../src/commands/install.js';
+import { listCommand } from '../src/commands/list.js';
+import { validateCommand } from '../src/commands/validate.js';
+
+const require = createRequire(import.meta.url);
+const pkg = require('../package.json');
+
+program
+  .name('manyplug')
+  .description('CLI plugin manager for ManyBot')
+  .version(pkg.version);
+
+program
+  .command('init <name>')
+  .description('Create a new plugin boilerplate')
+  .option('-c, --category <cat>', 'Plugin category', 'utility')
+  .action(initCommand);
+
+program
+  .command('install [plugin]')
+  .description('Install a plugin from registry or local path')
+  .option('-l, --local <path>', 'Install from local path')
+  .option('-g, --global', 'Install to global registry')
+  .action(installCommand);
+
+program
+  .command('list')
+  .alias('ls')
+  .description('List installed plugins')
+  .option('-a, --all', 'Include disabled plugins')
+  .action(listCommand);
+
+program
+  .command('validate [path]')
+  .description('Validate manyplug.json syntax')
+  .action(validateCommand);
+
+program.parse();