feat(tidal): ✨ add url_ending_clean function and refactor URL handling. Fixes #523

* Introduced `url_ending_clean` to sanitize URLs by removing trailing "/u" or "?u".
* Updated `_process_url` and GUI search logic to utilize cleaned URLs for better validation and processing.

tidal_dl_ng/helper/tidal.py

@@ -41,6 +41,7 @@ def name_builder_item(media: Track | Video) -> str:
 
 
 def get_tidal_media_id(url_or_id_media: str) -> str:
+
     id_dirty = url_or_id_media.rsplit("/", 1)[-1]
     id_media = id_dirty.rsplit("?", 1)[0]
 
@@ -70,6 +71,18 @@ def get_tidal_media_type(url_media: str) -> MediaType | bool:
     return result
 
 
+def url_ending_clean(url: str) -> str:
+    """Checks if a link ends with "/u" or "?u" and removes that part.
+
+    Args:
+        url (str): The URL to clean.
+
+    Returns:
+        str: The cleaned URL.
+    """
+    return url[:-2] if url.endswith("/u") or url.endswith("?u") else url
+
+
 def search_results_all(session: Session, needle: str, types_media: SearchTypes = None) -> dict[str, [SearchTypes]]:
     limit: int = 300
     offset: int = 0