feature/wifi-provisioning: Added wifi-provisioning component from idf.

Added wifi-provisioning examples and esp_prov tool.

tools/esp_prov/security/security.py

@@ -0,0 +1,21 @@
+# Copyright 2018 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.
+#
+
+# Base class for protocomm security
+
+class Security:
+    def __init__(self, security_session):
+        self.security_session = security_session
+