Add EVMC_WASM_TRAP error code

Author: axic

include/evmc/evmc.h

@@ -280,6 +280,12 @@ enum evmc_status_code
      */
     EVMC_WASM_UNREACHABLE_INSTRUCTION = 14,
 
+    /**
+     * A WebAssembly trap has been hit during execution. This can be for many
+     * reasons, including division by zero, validation errors, etc.
+     */
+    EVMC_WASM_TRAP = 15,
+
     /** EVM implementation generic internal error. */
     EVMC_INTERNAL_ERROR = -1,