Clarify Inspector::call retrun type

[mattsse]

not obvious what the range of the return type represents

revm/crates/revm/src/inspector.rs

Lines 82 to 90 in 3608d2d

	/// Called whenever a call to a contract is about to start.
	///
	/// InstructionResulting anything other than [crate::interpreter::InstructionResult::Continue] overrides the result of the call.
	#[inline]
	fn call(
	&mut self,
	context: &mut EvmContext<'_, DB>,
	inputs: &mut CallInputs,
	) -> Option<(InterpreterResult, Range<usize>)> {

ref paradigmxyz/reth#5502

[rakita]

Done by adding structs