Project structure refactor:

- Change package name general_server to gateway
- Changing the structure of directories and packages
- Adding vendor to the project

vendor/gopkg.in/ini.v1/.gitignore

@@ -0,0 +1,7 @@
+testdata/conf_out.ini
+ini.sublime-project
+ini.sublime-workspace
+testdata/conf_reflect.ini
+.idea
+/.vscode
+.DS_Store