Compile Amy to intergrate with JOS

[hamzaremmal]

JOS-OS : https://github.com/hamzaremmal/jos-os

The goal : Implement a user space program that can run in jos.

As a first goal, we can try to compile the HelloWorld.amy program :

module HelloWorld
    Std.printString("Hello World !")
end HelloWorld

To integrate with JOS, we will have to create a specific module for syscalls :

module jos
// define syscalls with stub implementation
end jos