Add support for hex digits. Report progress in following format:

• Test Dev:

• Corner cases

  • No underscore at the start or end of the digit (excluding the 0x part)

• Random values

• Still need to implement language server tests

• Implementation:

• Developed off the existing grammar Ajit had already made

• Added hex digits as a terminal

• Deployment:

• Validation

• Language Server has been generated, and Nina got the DSL working on VSCode