fix: AES ECB mode in Data processor not working at all (#1986)

Fix the AES ECB mode in the data processor along with some other misc
fixes:
- Fixed nullpointer node not working
- Fixed crypto module incorrectly using mbedtls api
- Fixed crypto module ignoring mbedtls errors
- Fixed silently ignoring of errors in AES node

lib/libimhex/source/data_processor/node.cpp

@@ -35,9 +35,6 @@ namespace hex::dp {
 
         auto &outputData = attribute->getOutputData();
 
-        if (outputData.empty())
-            throwNodeError("No data available at connected attribute");
-
         return outputData;
     }