add parcel to bundle js

package.json

+{
+  "name": "test",
+  "version": "1.0.0",
+  "description": "//TODO",
+  "main": "public/assets/js/general.js",
+  "type": "module",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "parcel watch public/assets/js/map.js --out-dir ./public/assets/dist/",
+    "build": "parcel build public/assets/js/map.js --out-dir ./public/assets/dist/"
+  },
+  "author": "",
+  "license": "ISC",
+  "directories": {
+    "test": "tests"
+  },
+  "dependencies": {
+    "ol": "^6.4.3"
+  },
+  "devDependencies": {
+    "parcel-bundler": "^1.12.4"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://gitlab.univ-lorraine.fr/moreau96u/project-covid.git"
+  }
+}