allow adding of custom names to search

Allow adding of custom names to search. Please read the 'Adding Custom Names' section of the readme. #37

Update colors and images for elements.
Added primogem to material database.
Added imagenames to materials. materials.images.nameicon
Make Languages and Folder enum available. genshindb.Languages genshindb.Folder #36
Added image names for all foods. foods.images.nameicon. If you could find somewhere that hosts these images... #40