Move macros from roc_reporting to new roc_error_macros module

The `internal_error!` and `user_error!´ macros can't be used everywhere
when they live in `roc_reporting` due to circular dependencies.

compiler/gen_wasm/src/wasm_module/serialize.rs

@@ -1,7 +1,7 @@
 use std::{fmt::Debug, iter::FromIterator};
 
 use bumpalo::collections::vec::Vec;
-use roc_reporting::internal_error;
+use roc_error_macros::internal_error;
 
 /// In the WebAssembly binary format, all integers are variable-length encoded (using LEB-128)
 /// A small value like 3 or 100 is encoded as 1 byte. The value 128 needs 2 bytes, etc.