Remove nettle library from OAI, support OpenSSL 3.0 and 1.1

Add byte_array_t structure under common/

common/utils/ds/byte_array.h

@@ -0,0 +1,42 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (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.openairinterface.org/?page_id=698
+ *
+ * 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.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#ifndef BYTE_ARRAY_H_OAI
+#define BYTE_ARRAY_H_OAI
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef struct {
+  size_t len;
+  uint8_t* buf;
+} byte_array_t;
+
+typedef struct {
+  uint8_t buf[32];
+} byte_array_32_t;
+
+byte_array_t copy_byte_array(byte_array_t src);
+void free_byte_array(byte_array_t ba);
+bool eq_byte_array(const byte_array_t* m0, const byte_array_t* m1);
+
+#endif