Implement most missing wasm-c-api APIs (#303) (#676)

Remove unnecessary functions and implement more APIs:
- wasm_##name##same
- wasm##name##as_ref
- wasm_ref_as##name##
- wasm_ref_delete
- wasm_module_validate
- wasm_table_get/set/size
- wasm_memory_size
- wasm_config_new
- wasm_foreign_new

And add more wasm-c-api samples, update the related documen, add more CI rules.

Signed-off-by: Wenyong Huang <wenyong.huang@intel.com>

core/iwasm/aot/aot_runtime.c

@@ -2822,9 +2822,12 @@ aot_table_grow(AOTModuleInstance *module_inst, uint32 tbl_idx,
         return orig_tbl_sz;
     }
 
+    if (tbl_inst->cur_size > UINT32_MAX - inc_entries) {
+        return (uint32)-1;
+    }
+
     entry_count = tbl_inst->cur_size + inc_entries;
-    /* prevent from integer overflow */
-    if (entry_count < tbl_inst->cur_size || entry_count > tbl_inst->max_size) {
+    if (entry_count > tbl_inst->max_size) {
         return (uint32)-1;
     }