Create a RISC-V (riscv64) build of Corretto

[kriston]

Is your feature request related to a problem?

Lack of RISC-V (riscv64) support.

Describe a solution you would like

Create a RISC-V (riscv64) build of Corretto.

Describe alternatives you have considered

OpenJDK has a riscv64 build already.

Additional context

Thank you for your consideration.