Substantial refactoring of code structure

controllers/params.mjs

@@ -1,22 +1,20 @@
 'use strict';
 
-import Common from '../src/common.js';
+import { TECH_NAMES } from "../src/constants.js";
+import { getParamsFromFolders } from "../src/service/ImageRepository.js";
 
 /**
  * Show all possible parameters for manifest URLs
  */
 export default async function exposeParams() {
     console.log(process.env.IMAGES_DIR);
-    let techs = [];
 
-    for (let key in Common.TECH_NAMES) {
-        techs.push({
-            'acronym': key.toUpperCase(),
-            'fullname': Common.TECH_NAMES[key]
-        });
-    }
+    const techs = Object.entries(TECH_NAMES).map(([key, fullname]) => ({
+        acronym: key.toUpperCase(),
+        fullname,
+    }));
     
-    let papyri = await Common.getParamsFromFolders();
+    let papyri = await getParamsFromFolders();
 
     return {
         'techniques' : techs,