Feature: Add Malayalam(മലയാളം) localization (#707) (#708)

* Add Malayalam localization

* Added Malayalam translations for dashboard locales (UI)

 Translations for
* webhooks, signup, settings, set a new password, reset password, report, login, integrations

* Added Malayalam translations for dashboard translations for UI

* Added dashboard Malayalam translations for contact, conversation, general settings and inbox management.

* [707] Add Malayalam translations for dashboard

* [707] Add support for Malayalam

* [707] Fix review comments

* [707] fix review commetns

Co-authored-by: sony-mathew <ynos1234@gmail.com>

app/javascript/dashboard/routes/dashboard/settings/account/Index.vue

@@ -26,6 +26,7 @@
             <select v-model="locale">
               <option value="en">English</option>
               <option value="de">German</option>
+              <option value="ml">Malayalam</option>
             </select>
             <span v-if="$v.locale.$error" class="message">
               {{ $t('GENERAL_SETTINGS.FORM.LANGUAGE.ERROR') }}