Split GUI and the model into two classes. File manager is now fully implemented. the branch will be merged with main

Deserialize methods in FileManager now take the JSON string as parameter. Fixed bug where empty files would cause NullPointerExceptions. All classes now work depend on an instance of TastyPages instead of static class members in TastyPages

Categories, recipes and ingredients now saved in hashmap together with their associated code and a whole bunch of refactoring to go along with it. TypeAdapters for Recipes, NutritionTables and Categories. Saving and retrieving Recipe, NutritionTable and Category to / from JSON works (see tests).

added BaseController that stores FXML files for all views, started bugfixing for equals methods, started working on recipe view fxml file

improved add-methods and knew method to check csv for other measurements than g and convert them to gram

Added parser to retrieve Ingredients from CSV files. includes tests. toString method for Ingredients. new NutritionTable constructor to create objects from List<Double>.