feat(tvix/compiler): implement || operator

Same dance as `&&` but logically inverted.

Change-Id: I213e200e3836527e9abe510f354ee7cd1f70d041
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6151
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>

tvix/eval/src/vm.rs

@@ -176,6 +176,12 @@ impl VM {
                     self.ip += offset;
                 }
 
+                OpCode::OpJumpIfTrue(offset) => {
+                    if self.peek(0).as_bool()? {
+                        self.ip += offset;
+                    }
+                }
+
                 OpCode::OpJumpIfFalse(offset) => {
                     if !self.peek(0).as_bool()? {
                         self.ip += offset;