clippy: allow ignore unused

[nilslice]

We can change the warn here to allow and remove some of these pretty easily. The formatting in xtp output gets a little wonky anyways so it's less helpful (also not particularly relevant anyways)

warning: unused macro definition: `try_input`
  --> src/pdk.rs:16:14
   |
16 | macro_rules! try_input {
   |              ^^^^^^^^^
   |
   = note: `#[warn(unused_macros)]` on by default