Improve formatting of tables.rs
Improve formatting of tables.rs

Make unicode.py generate a tables.rs which is more conformant to usual
Rust formatting (as per `rustfmt`).

GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,graydon/rust,GBGamer/rust,aidancully/rust,graydon/rust,graydon/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust