Move emacs stuff to extras/

Change-Id: Ibbb7d8500e9064215cf912bd00bdf72a748f8a27
Signed-off-by: Damjan Marion <damarion@cisco.com>

extras/emacs/plugin-api-skel.el

@@ -0,0 +1,48 @@
+;;; plugin-api-skel.el - vpp engine plug-in "all-apih.c" skeleton
+;;;
+;;; Copyright (c) 2016 Cisco and/or its affiliates.
+;;; 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.
+
+(require 'skeleton)
+
+(define-skeleton skel-plugin-api
+"Insert a plug-in '<name>.api' skeleton "
+nil
+'(if (not (boundp 'plugin-name))
+     (setq plugin-name (read-string "Plugin name: ")))
+'(setq PLUGIN-NAME (upcase plugin-name))
+"
+/* Define a simple enable-disable binary API to control the feature */
+
+define " plugin-name "_enable_disable {
+    /* Client identifier, set from api_main.my_client_index */
+    u32 client_index;
+
+    /* Arbitrary context, so client can match reply to request */
+    u32 context;
+
+    /* Enable / disable the feature */
+    u8 enable_disable;
+
+    /* Interface handle */
+    u32 sw_if_index;
+};
+
+define " plugin-name "_enable_disable_reply {
+    /* From the request */
+    u32 context;
+
+    /* Return value, zero means all OK */
+    i32 retval;
+};
+")