Implement reading projects data from json file

[angost]

https://stackoverflow.com/questions/71633864/how-to-read-json-file-in-dart-console-app

https://codewithandrea.com/articles/parse-json-dart/#parsing-json-to-a-dart-model-class

https://stackoverflow.com/questions/53800662/how-do-i-call-async-property-in-widget-build-method

https://stackoverflow.com/questions/51901002/is-there-a-way-to-load-async-data-on-initstate-method

https://themobilecoder.com/using-future-in-flutter/

https://stackoverflow.com/questions/54861467/unsupported-operation-namespace-while-using-dart-io-on-web

https://stackoverflow.com/questions/9212964/file-input-and-dart

[angost]

Potential, simple but not clean solution: create ProjectData class with List

• no need to asynchronously get data from jason
• moves data from projectPage.dart
• not clean, not scalable