ci: add comprehensive formatting and linting setup

- Add formatting commands to justfile (format, fmt_check, clippy_check, fc)
- Create GitHub Actions workflows for automated fmt and clippy checks
- Fix existing clippy warnings in macro code
- Ensure CI enforcement of code quality standards

This brings native_model in line with native_db's robust formatting and linting approach.

libraries/native_model/src/wrapper.rs

@@ -1,6 +1,6 @@
 use crate::header::Header;
 use zerocopy::little_endian::U32;
-use zerocopy::{SplitByteSlice, SplitByteSliceMut, Ref, IntoBytes};
+use zerocopy::{IntoBytes, Ref, SplitByteSlice, SplitByteSliceMut};
 
 pub struct Wrapper<T: SplitByteSlice> {
     header: Ref<T, Header>,