Explore ability to support groovy base migration script via Java on Truffle

[pditommaso]

The migtool allows the use of migration file via Groovy script.

However, this capability is not possible when using the native AOT compilation.

The use of the experimental Java on Truffle should allow this capability

https://medium.com/graalvm/java-on-truffle-going-fully-metacircular-215531e3f840