Add more Core Collections and Puzzles

[Til7701]

Before adding a puzzle or collection, familiarize yourself with the puzzle specification located in docs/puzzle-collection-spec.md.

To add puzzles to the existing collections, modify the files in puzzled/resources/puzzles.

To add a new collection, add it in the same folder and add it in puzzled/src/puzzles/mod.rs to the CORE_COLLECTIONS list. Additionally, you need to add a line to puzzled/resources/puzzled.gresource.xml. I can help with those files, if you need help. You can also load it as a community collection to test and add it to the core collections later.