JFLAP grammar feature support

Proposed feature or solution

Implement the grammar feature from JFLAP into Automatarium

Additional information

Basic grammar input, type detection and string validation implemented. Only regular grammar conversion to automata implemented, still need to implement conversion for Context-Free to PDA, Context-Sensitive to LBA (or TM) and Unrestricted to Turing Machine. Tests also all fail as they are designed for automata but the grammar does not have the same types or structure so they all need to be rewritten