feat: add initial notification support

* Add updated recipe notification

* Add recipe deleted notification

* Add notifications translations

* Shopping lists full c/u/d notifications

* Add categories c/u/d notifications

* Deal with None values in translation provider

* Add tag c/u/d notifications

* Add cookbook c/u/d notifications

* use single key pairs for consistency with frontend

* change dependency injection strategy

* use generic update messages

* use service to manage url generation server-side

* use new strategies for messages

* fix translator

Co-authored-by: Miroito <alban.vachette@gmail.com>

mealie/services/urls/__init__.py

@@ -0,0 +1 @@
+from .url_constructors import *

mealie/services/urls/url_constructors.py

@@ -0,0 +1,36 @@
+from pydantic import UUID4
+
+from mealie.core.config import get_app_settings
+
+
+def _base_or(base_url: str | None) -> str:
+    if base_url is None:
+        settings = get_app_settings()
+        return settings.BASE_URL
+
+    return base_url
+
+
+def recipe_url(recipe_slug: str, base_url: str | None) -> str:
+    base = _base_or(base_url)
+    return f"{base}/recipe/{recipe_slug}"
+
+
+def shopping_list_url(shopping_list_id: UUID4 | str, base_url: str | None) -> str:
+    base = _base_or(base_url)
+    return f"{base}/shopping-list/{shopping_list_id}"
+
+
+def tag_url(tag_slug: str, base_url: str | None) -> str:
+    base = _base_or(base_url)
+    return f"{base}/recipes/tags/{tag_slug}"
+
+
+def category_url(category_slug: str, base_url: str | None) -> str:
+    base = _base_or(base_url)
+    return f"{base}/recipes/categories/{category_slug}"
+
+
+def tool_url(tool_slug: str, base_url: str | None) -> str:
+    base = _base_or(base_url)
+    return f"{base}/recipes/tool/{tool_slug}"