feat(bytecode): add signed remainder operation

crates/fogtix-vm/src/lib.rs

@@ -237,6 +237,10 @@ impl Process {
                             Some(x) => x,
                             None => return Err(Error::DivisionByZero),
                         },
+                        B::Srem => match (a as i128).checked_rem(b as i128) {
+                            Some(x) => x as u128,
+                            None => return Err(Error::DivisionByZero),
+                        },
                     });
                 }
             }