Add loxcraft under Toy Projects

[ajeetdsouza]

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Hey, thanks for creating this list! I would love it if you could include loxcraft here. Loxcraft started off as yet another implementation of Crafting Interpreters, but I decided to take it up a notch and build:

• syntax highlighting, via tree-sitter
• an online playground, via WebAssembly
• IDE integration, via Language Server Protocol
• an REPL
• really good error messages

Also, it's really fast! Most implementations of Lox turn out to be significantly slower than the one in C, but this one comes really close.