feat: add basic auth support

bin/index.js

@@ -6,9 +6,10 @@ const mod = require('../src/index.mjs').default;
 const logger = require('../src/lib/logger.mjs').default;
 
 const { index, interval, ...elasticsearch } = getopts(process.argv.slice(2), {
-  string: ['host', 'log'],
+  string: ['host', 'auth', 'log', 'index'],
   alias: {
     h: 'host',
+    u: 'auth',
     l: 'log',
     i: 'index',
     t: 'interval',