Create trap for error message when wasm_instance_new fails (#1751)

Create trap for error message when wasm_instance_new fails:
- Similar to [this PR](https://github.com/bytecodealliance/wasm-micro-runtime/pull/1526),
   but create a wasm_trap_t to output the error msg instead of adding error_buf to the API.
- Trap will need to be deleted by the caller but is not a breaking change as it is only
   created if trap is not NULL.
- Add error messages for all failure cases here, try to make them accurate but welcome
  feedback for improvements.

Signed-off-by: Andrew Chambers <ncham@amazon.com>

core/iwasm/include/wasm_c_api.h

@@ -592,13 +592,13 @@ WASM_DECLARE_REF(instance)
 
 WASM_API_EXTERN own wasm_instance_t* wasm_instance_new(
   wasm_store_t*, const wasm_module_t*, const wasm_extern_vec_t *imports,
-  own wasm_trap_t**
+  own wasm_trap_t** trap
 );
 
 // please refer to wasm_runtime_instantiate(...) in core/iwasm/include/wasm_export.h
 WASM_API_EXTERN own wasm_instance_t* wasm_instance_new_with_args(
   wasm_store_t*, const wasm_module_t*, const wasm_extern_vec_t *imports,
-  own wasm_trap_t**, const uint32_t stack_size, const uint32_t heap_size
+  own wasm_trap_t** trap, const uint32_t stack_size, const uint32_t heap_size
 );
 
 WASM_API_EXTERN void wasm_instance_exports(const wasm_instance_t*, own wasm_extern_vec_t* out);