Bed scraper/Heat bed scraper

This is a practical build plate scraper/heatbed scraper that makes it easy to remove models and scrape away lines from the build plate. The new version is larger in size and has a larger working surface than the previously uploaded version. Two versions are designed in this update, a regular version and a hollow version, allowing users to choose based on their preferences. Tests have shown that PETG printing is more durable than PLA, so it is recommended to use PETG for printing.