* Introduced `ItemRequest` struct to encapsulate URL and item data
* Updated `create_item` handler to accept `ItemRequest` instead of separate URL and item parameters
* Removed redundant error handling and logging in API handlers
* Improved code organization and readability
* Added a junction table for custom properties to improve data normalization
* Modified the `insert_item_by_url` function to handle custom properties through the junction table
* Introduced `get_url_id` and `get_or_create_property` helper functions for improved code organization
* Updated the `insert_item_by_url` function to use the new helper functions and handle custom properties correctly
* Improved error handling and logging throughout the database module
Changes:
* Replaced `let current_url = get_current_url();` with `let current_url = Rc::new(get_current_url());` to share the current URL between closures.
* Wrapped `add_property` and `update_item` functions in Arc to share them between closures.
* Updated `save_item_to_db` function to take `current_url` as an argument and use it to construct the ItemToSend struct.
* Updated `fetch_property_labels` function to use the `property_ids` vector instead of a single property ID.
* Updated `fetch_item_properties` function to use the `wikidata_id` parameter instead of a hardcoded value.
* Updated `WikidataResponse` struct to use a `Vec<WikidataSuggestion>` instead of a single `WikidataSuggestion`.
- Refactor `fetch_item_properties` to handle nested JSON types efficiently
- Introduce `parse_property_value` for structured processing of various value types
- Handle time values with varying precision (year, month, day)
- Parse and format dates from RFC 3339 format
- Support fetching and displaying labels for Wikidata entity references
- Replace raw JSON object handling with cleaner structured parsing
- Update property label fetching and signal updates for better UI data synchronization
