- Apply lint config to entire workspace
- Inherit workspace config for fish-printf
- Allow stdlib printing in fish-printf tests
The current problem which is addressed by this is that warnings about C-String
literals are generated by clippy for code in fish-printf. These literals are not
available with the current MSRV 1.70, but previously the MSRV setting was not
inherited by fish-printf, causing the warning to appear.
