GraalVM native image support

[slinkydeveloper]

Check SDK compiles using GraalVM native image.

• Figure out the required tasks required to enable the SDK to compile using GraalVM native image.
• Add CI test checking GraalVM native image compilation.
• Document how to build sdk-java with GraalVM native image (perhaps related to Template gradle project #22?)

[slinkydeveloper]

A starting point here https://how-to.vertx.io/graal-native-image-howto/ and here https://graalvm.github.io/native-build-tools/latest/gradle-plugin.html

[slinkydeveloper]

A blocker to support graalvm is the protobuf classes support: #125. There's this tool we could try https://github.com/ricantech/protobuf-graalvm-feature

[slinkydeveloper]

If we get rid of gRPC/Protobuf official libraries completely, we also solve this issue. To do so we would need just our code generator for services, and we could use https://github.com/HebiRobotics/QuickBuffers for the protobuf library.

[slinkydeveloper]

For the time being this is not high priority. Lambda users can use Lambda ColdStart for JVM to get good startup time.