Do not set the stack size outside prod (#415)

* Add support for multiple modules

* Add macos fix

* Update setup-submodules script

patches/libtock-rs/01-macos.patch

@@ -0,0 +1,12 @@
+diff --git a/core/src/stack_size.rs b/core/src/stack_size.rs
+index 9145393..ef55383 100644
+--- a/core/src/stack_size.rs
++++ b/core/src/stack_size.rs
+@@ -14,6 +14,7 @@ macro_rules! stack_size {
+     {$size:expr} => {
+         #[no_mangle]
+         #[link_section = ".stack_buffer"]
++        #[cfg(not(target_os = "macos"))]
+         pub static mut STACK_MEMORY: [u8; $size] = [0; $size];
+     }
+ }