Roleplay chat 2.0.0+1.21.6

What's Changed

• 🔧 Rétrograder vers Minecraft 1.21.6 et ajouter les Gametests (serveur + client) by @cprodhomme in #2
• 1.21.6 nameplate by @cprodhomme in #3

New Contributors

• @cprodhomme made their first contribution in #2

Full Changelog: https://github.com/minecraft-fr-net/roleplay-chat/commits/V2.0.0+1.21.6