chore: add IDE extension for i18n handling (#1896)

> let me know what needs to be changed in order to merge this

# Description: DX upgrade with little i18n tool.
- I added a
[ide-extension](https://inlang.com/m/r7kp499g/app-inlang-ideExtension)
config to `quivr`. This enables developers and contributors to extract,
access and update translations in code using the existing json files
under the hood.

- **Opt-in:** With the config in place you can also use the [fink
editor](https://inlang.com/m/tdozzpar/app-inlang-editor) to update
product copy/translation with a no code UI. Here u see an example from
my fork: https://inlang.com/editor/github.com/NilsJacobsen/quivr

# What I added (opt-in)
- A config file -> `settings.json`
- Vscode recommendation so the contributors can use the extension

## Screenshots:
IDE-Extension:

![image](https://github.com/StanGirard/quivr/assets/58360188/6f1217fe-692e-4aa2-942b-458cabf3bc2b)

Editor:
<img width="1512" alt="image"
src="https://github.com/StanGirard/quivr/assets/58360188/aa62ca66-6d11-42c2-8dc3-30a97ed985de">

.vscode/extensions.json

@@ -1,8 +1,9 @@
 {
-    "recommendations": [
-        "ms-pyright.pyright",
-        "dbaeumer.vscode-eslint",
-        "ms-python.vscode-pylance",
-        "ms-pyright.pyright"
-    ]
+  "recommendations": [
+    "ms-pyright.pyright",
+    "dbaeumer.vscode-eslint",
+    "ms-python.vscode-pylance",
+    "ms-pyright.pyright",
+    "inlang.vs-code-extension"
+  ]
 }

project.inlang/settings.json

@@ -0,0 +1,35 @@
+{
+    "$schema": "https://inlang.com/schema/project-settings",
+    "sourceLanguageTag": "en",
+    "languageTags": [
+      "en", "es", "fr", "pt-br", "ru", "zh-cn"
+    ],
+    "modules": [
+      "https://cdn.jsdelivr.net/npm/@inlang/plugin-i18next@4/dist/index.js",
+      "https://cdn.jsdelivr.net/npm/@inlang/message-lint-rule-empty-pattern@latest/dist/index.js",
+      "https://cdn.jsdelivr.net/npm/@inlang/message-lint-rule-identical-pattern@latest/dist/index.js",
+      "https://cdn.jsdelivr.net/npm/@inlang/message-lint-rule-missing-translation@latest/dist/index.js",
+      "https://cdn.jsdelivr.net/npm/@inlang/message-lint-rule-without-source@latest/dist/index.js"
+    ],
+    "plugin.inlang.i18next": {
+      "pathPattern": {
+        "brain": "./frontend/public/locales/{languageTag}/brain.json",
+        "chat": "./frontend/public/locales/{languageTag}/chat.json",
+        "config": "./frontend/public/locales/{languageTag}/config.json",
+        "contact": "./frontend/public/locales/{languageTag}/contact.json",
+        "deleteOrUnsubscribeFormBrain": "./frontend/public/locales/{languageTag}/deleteOrUnsubscribeFormBrain.json",
+        "explore": "./frontend/public/locales/{languageTag}/explore.json",
+        "external_api_definition": "./frontend/public/locales/{languageTag}/external_api_definition.json",
+        "home": "./frontend/public/locales/{languageTag}/home.json",
+        "invitation": "./frontend/public/locales/{languageTag}/invitation.json",
+        "knowledge": "./frontend/public/locales/{languageTag}/knowledge.json",
+        "login": "./frontend/public/locales/{languageTag}/login.json",
+        "logout": "./frontend/public/locales/{languageTag}/logout.json",
+        "monetization": "./frontend/public/locales/{languageTag}/monetization.json",
+        "translation": "./frontend/public/locales/{languageTag}/translation.json",
+        "upload": "./frontend/public/locales/{languageTag}/upload.json",
+        "user": "./frontend/public/locales/{languageTag}/user.json"
+      }
+    }
+}
+