Translations - Crowdin, Set workspace member locale on signup, and optimizations (#10091)

More progress on translations:
- Migrate from translations.io to crowdin
- Optimize performance and robustness 
- Set workspaceMember/user locale upon signup

packages/twenty-front/src/modules/auth/graphql/mutations/signUp.ts

@@ -8,6 +8,7 @@ export const SIGN_UP = gql`
     $workspacePersonalInviteToken: String = null
     $captchaToken: String
     $workspaceId: String
+    $locale: String
   ) {
     signUp(
       email: $email
@@ -16,6 +17,7 @@ export const SIGN_UP = gql`
       workspacePersonalInviteToken: $workspacePersonalInviteToken
       captchaToken: $captchaToken
       workspaceId: $workspaceId
+      locale: $locale
     ) {
       loginToken {
         ...AuthTokenFragment