Alternative `nvim-treesitter` queries

[Iron-E]

nvim-treesitter does not tend to support very fine syntax highlighting as per :h group-names. For example, in Rust the ? token is represented as an Operator (e.g. +, -, &&) rather than Exception (e.g. try, catch, throw). I wish to support nvim-treesitter more appropriately with this template by providing scheme queries, though this will take a long time to do and I can't get to it for a while.