feat(tvix/eval): Implement OpResolveWith instruction

Change-Id: I4d2a69f28a6b6199b3ff48ef81135e7da9fe1c3b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6222
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>

tvix/eval/src/opcode.rs

@@ -55,6 +55,7 @@ pub enum OpCode {
     // `with`-handling
     OpPushWith(usize),
     OpPopWith,
+    OpResolveWith,
 
     // Lists
     OpList(usize),