Add basic ICU message format support for translations (#1645)

## Description:

This pull request adds support for ICU (Intl MessageFormat) syntax in
the translation system.
Existing translation files may need to be updated to fully leverage ICU
features.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I have read and accepted the CLA agreement (only required once).

## Please put your Discord username so you can be contacted if a bug or
regression is found:

DISCORD_USERNAME

package.json

@@ -113,6 +113,7 @@
     "express": "^4.21.1",
     "express-rate-limit": "^7.5.0",
     "fastpriorityqueue": "^0.7.5",
+    "intl-messageformat": "^10.7.16",
     "ip-anonymize": "^0.1.0",
     "jose": "^6.0.10",
     "js-yaml": "^4.1.0",