Lexer is functional!!!

• I made a functioning lexer that works with a “say statement”, numeric literals, comments, and basic operations, and I can easily expand upon it when needed.
• I also learned a lot of rust
  Example syntax:

x = 6000
say x * 400 + 3 // 2400003
// maybe implement inequalities?

I’m not sure how I would do a “solve for x” kinda thing, but I’ll figure it out
Also I might not actually finish this project so dont get too excited lol

I’ll add string literals later