chore(tvix): add missing clippy attributes & config

For cases where clippy lints don't apply to us, or something is
misfiring, add appropriate configuration.

Relates to b/321.

Change-Id: I0af453910b4a4112bf685b2a8e9a73de10ec87ea
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9965
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

tvix/eval/src/lib.rs

@@ -288,6 +288,7 @@ impl<'code, 'co, 'ro> Evaluation<'code, 'co, 'ro> {
 
 /// Internal helper function for common parsing & compilation logic
 /// between the public functions.
+#[allow(clippy::too_many_arguments)] // internal API, no point making an indirection type
 fn parse_compile_internal(
     result: &mut EvaluationResult,
     code: &str,