Add ability to return any value from a crosschain function call

Consensys / gpact

General Purpose Atomic Crosschain Transaction Protocol

Apache License 2.0

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Add ability to return any value from a crosschain function call #139

Closed drinkcoffee closed 2 years ago

drinkcoffee commented 2 years ago

Add a new function to the GPACT API for returning the bytes return value. This allows calling application code to decode the actual result, whether is be a single value or multiple values.

Added an example showing how to use the new functionality. Additionally, this example is used to test the functionality.

Resolves issue: https://github.com/ConsenSys/gpact/issues/15