Unit test for File Tokenizer

[TheFJcurve]

• Added unit test for file tokenizer (current coverage is 100%)
• Changed file tokenizer's get_block_content function to stop looking at the original file to get back the original data
• Changed the hashing and de-hashing functions to encoding and decoding (hashes cannot be dehashed)
• Current implementation of encoding and decoding gives back the original data itself, that will have to be done
• Added more type safety across the repo
• config file contains more information, the goal should be not to hardcode anything
• Github workflows work for all branches and all PRs, works hand in hand for any forks.
• Created a common test file, to share some file writing and deleting features without double coding.
• Current pylint score 9.83