Add callback to handle memory.grow failures (#2522)

When embedding WAMR, this PR allows to register a callback that is
invoked when memory.grow fails.

In case of memory allocation failures, some languages allow to handle
the error (e.g. by checking the return code of malloc/calloc in C), some
others (e.g. Rust) just panic.

core/iwasm/interpreter/wasm_runtime.c

@@ -2400,6 +2400,9 @@ wasm_call_function(WASMExecEnv *exec_env, WASMFunctionInstance *function,
     /* set thread handle and stack boundary */
     wasm_exec_env_set_thread_info(exec_env);
 
+    /* set exec env so it can be later retrieved from instance */
+    module_inst->e->common.cur_exec_env = exec_env;
+
     interp_call_wasm(module_inst, exec_env, function, argc, argv);
     return !wasm_copy_exception(module_inst, NULL);
 }

core/iwasm/interpreter/wasm_runtime.h

@@ -213,6 +213,8 @@ typedef struct CApiFuncImport {
 /* The common part of WASMModuleInstanceExtra and AOTModuleInstanceExtra */
 typedef struct WASMModuleInstanceExtraCommon {
     CApiFuncImport *c_api_func_imports;
+    /* pointer to the exec env currently used */
+    WASMExecEnv *cur_exec_env;
 #if WASM_CONFIGUABLE_BOUNDS_CHECKS != 0
     /* Disable bounds checks or not */
     bool disable_bounds_checks;