feat: #74 import intl-segmenter polfill from formatjs

- polyfill is required because firefox hasnt implemented intl segmenter yet

package.json

@@ -41,6 +41,7 @@
     "@babel/core": "^7.22.8",
     "@babel/plugin-proposal-numeric-separator": "^7.18.6",
     "@babel/preset-env": "^7.22.7",
+    "@formatjs/intl-segmenter": "^11.5.5",
     "babel-loader": "^9.1.3",
     "browserslist": "^4.21.9",
     "copy-webpack-plugin": "^11.0.0",

src/tinode.js

@@ -53,6 +53,7 @@ import * as Const from './config.js';
 import CommError from './comm-error.js';
 import Connection from './connection.js';
 import DBCache from './db.js';
+import '@formatjs/intl-segmenter/polyfill'
 import Drafty from './drafty.js';
 import LargeFileHelper from './large-file.js';
 import MetaGetBuilder from './meta-builder.js';