Provide format command for each sandbox

For each sandbox add command to format the source files with a mask subcommand

mask format

Example with Rust

https://gitlab.com/pinage404/nix-sandboxes/-/blob/0abc1061ee88d934f2b705662bf68ef3bf5b5b62/rust/maskfile.md#L15

• c
• clojure
• common_lisp
• cpp
• elm
• erlang
• forth
• fsharp
• haskell
• nix
• php
• prolog
• python_poetry
• roc
• rockstar
• ruby -> RuboCop
• rust
• shell
• snapshot_testing not relevant
• typescript_bun
• typescript_deno
• typescript_node_jest
• typescript_node_vitest

The goal is to fill the entire column https://gitlab.com/pinage404/nix-sandboxes#tool-comparison-table

Help wanted

Merge Requests are welcome