feat(server): return header with salix-version

loopback/server/middleware.json

@@ -31,7 +31,8 @@
     "loopback#token": {}
   },
   "auth:after": {
-    "./middleware/current-user": {}
+    "./middleware/current-user": {},
+    "./middleware/salix-version": {}
   },
   "parse": {
     "body-parser#json":{} 

loopback/server/middleware/salix-version.js

@@ -0,0 +1,9 @@
+
+module.exports = function(options) {
+    return function(req, res, next) {
+        const packageJson = require('../../../package.json');
+
+        res.header('Salix-Version', packageJson.version);
+        next();
+    };
+};

package.json

@@ -1,6 +1,6 @@
 {
     "name": "salix-back",
-    "version": "1.0.0",
+    "version": "6.8.0",
     "author": "Verdnatura Levante SL",
     "description": "Salix backend",
     "license": "GPL-3.0",