✨ Add support for docs translations (#1168)

* 🌐 Refactor file structure to support internationalization

* ✅ Update tests changed after i18n

* 🔀 Merge Typer style from master

* 🔧 Update MkConfig with Typer-styles

* 🎨 Format mkdocs.yml with cannonical form

* 🎨 Format mkdocs.yml

* 🔧 Update MkDocs config

* ➕ Add docs translation scripts dependencies

* ✨ Add Typer scripts to handle translations

* ✨ Add missing translation snippet to include

* ✨ Update contributing docs, add docs for translations

* 🙈 Add docs_build to gitignore

* 🔧 Update scripts with new locations and docs scripts

* 👷 Update docs deploy action with translations

* 📝 Add note about languages not supported in the theme

* ✨ Add first translation, for Spanish

docs_src/handling_errors/tutorial005.py

@@ -0,0 +1,25 @@
+from fastapi import FastAPI, Request, status
+from fastapi.encoders import jsonable_encoder
+from fastapi.exceptions import RequestValidationError
+from fastapi.responses import JSONResponse
+from pydantic import BaseModel
+
+app = FastAPI()
+
+
+@app.exception_handler(RequestValidationError)
+async def validation_exception_handler(request: Request, exc: RequestValidationError):
+    return JSONResponse(
+        status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+        content=jsonable_encoder({"detail": exc.errors(), "body": exc.body}),
+    )
+
+
+class Item(BaseModel):
+    title: str
+    size: int
+
+
+@app.post("/items/")
+async def create_item(item: Item):
+    return item