Transition to workspace lints

• Take an argument of the rust project location
• Find all crate-wide lint attributes in target root files of crates listed in the workspace
  • parse top-level Cargo.toml as toml
  • read workspace.members
  • in each target's src_path, rg "#![(forbid|deny|warn|allow(($1)))]"
• Unify them by name and see if there are any listed with different levels that would conflict
  • if there are, error to go resolve?
  • or go with the level used the most and leave the remaining attributes with a comment?
• for each unique lint name:
  • remove all attributes from all workspace lib.rs files
  • add the lint to the appropriate workspace.lint table in the top-level Cargo.toml
  • cargo clippy --fix or stop if that doesn't succeed
  • commit the changes
• report summary for everything done and details for what wasn't done that has to be done manually

Useful nu docs I stumbled on that I might need later

• Editing a toml file