🚨(i18n) add linter to i18n package

We need to add a linter to the i18n package, we are mainly
interested by the jest linting rules so we create
a jest eslint config pluggable our other configs and to the
i18n eslint config.

src/frontend/apps/desk/.prettierrc.js

@@ -1,7 +0,0 @@
-module.exports = {
-  semi: true,
-  trailingComma: 'all',
-  singleQuote: true,
-  printWidth: 80,
-  tabWidth: 2,
-};