feat: ✨ add user recipe export functionality (#845)

* feat(frontend): ✨ add user recipe export functionality

* remove depreciated folders

* change/remove depreciated folders

* add testing variable in config

* add GUID support for group_id

* improve testing feedback on 422 errors

* remove/cleanup files/folders

* initial user export support

* delete unused css

* update backup page UI

* remove depreciated settings

* feat: ✨ export download links

* fix #813

* remove top level statements

* show footer

* add export purger to scheduler

* update purge glob

* fix meal-planner lockout

* feat: ✨ add bulk delete/purge exports

* style(frontend): 💄 update UI for site settings

* feat: ✨ add version checker

* update documentation

Co-authored-by: hay-kot <hay-kot@pm.me>

mealie/core/release_checker.py

@@ -0,0 +1,41 @@
+import datetime
+from functools import lru_cache
+
+import requests
+
+_LAST_RESET = None
+
+
+@lru_cache(maxsize=1)
+def get_latest_github_release() -> str:
+    """
+    Gets the latest release from GitHub.
+
+    Returns:
+        str: The latest release from GitHub.
+    """
+
+    url = "https://api.github.com/repos/hay-kot/mealie/releases/latest"
+    response = requests.get(url)
+    response.raise_for_status()
+    return response.json()["tag_name"]
+
+
+def get_latest_version() -> str:
+    """
+    Gets the latest release version.
+
+    Returns:
+        str: The latest release version.
+    """
+    MAX_DAYS_OLD = 1  # reset cache after 1 day
+
+    global _LAST_RESET
+
+    now = datetime.datetime.now()
+
+    if not _LAST_RESET or now - _LAST_RESET > datetime.timedelta(days=MAX_DAYS_OLD):
+        _LAST_RESET = now
+        get_latest_github_release.cache_clear()
+
+    return get_latest_github_release()