Implement AUIPC

src/instructions.rs

@@ -48,6 +48,7 @@ pub(crate) fn find_and_exec(instr: Instruction, core: &mut Core) -> Option<Instr
         },
         0b01101 => Some(rvi::lui(core, instr)),
         0b11011 => Some(rvi::jal(core, instr)),
+        0b00101 => Some(rvi::auipc(core, instr)),
         _ => None,
     }
 }