feat(heap): Add new heap component

components/heap/include/esp_heap_caps_init.h

@@ -0,0 +1,31 @@
+// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Initialize the capability-aware heap allocator.
+ *
+ * This is called once in the ESP8266 startup code. Do not call it
+ * at other times.
+ */
+void heap_caps_init();
+
+#ifdef __cplusplus
+}
+#endif