Allow to set native stack boundary to exec_env (#3862)

Add runtime API wasm_runtime_set_native_stack_boundary.

p.s. https://github.com/bytecodealliance/wasm-micro-runtime/issues/3816

core/iwasm/common/wasm_exec_env.h

@@ -136,6 +136,10 @@ typedef struct WASMExecEnv {
 
     void *user_data;
 
+    /* The boundary of native stack set by host embedder. It is used
+       if it is not NULL when calling wasm functions. */
+    uint8 *user_native_stack_boundary;
+
     /* The native thread handle of current thread */
     korp_tid handle;