maestro refacto to grrom, getpositions actions transfered to Observer, changed to frustum, with subscription

mysqlClient.js

@@ -1,10 +1,12 @@
 import mysql from 'mysql2/promise'
+import { loadP42Secrets } from './secretsLoader.js'
 
 export function resolveMysqlCredentials(config = {}) {
-    const user = process.env.user
+    loadP42Secrets()
+    const user = process.env.mysql_user
     const password = process.env.mysql_pass
     if(!user || !password) {
-        throw new Error('Missing MySQL credentials: set user and mysql_pass in environment')
+        throw new Error('Missing MySQL credentials: set mysql_user and mysql_pass in environment')
     }
     return({
         socketPath: config.socketPath,