[WIP] Add switcher

This tool can be used as CE/EE switcher

switch ce
switch ee

There is a little convention: your database names should be prefixed with _ce and _ee and the same with repositories folder (you should have two folders repositories and repositories_ee or repositories_ce).

In other words, this switcher just replaces prefixes in your database.yml and renames folders repositories to repositories_ce and repositories_ee to repositories. That's it

Title changed from [WIP] Add switch to [WIP] Add switcher

@vsizov thanks for sharing

not sure if we should use this, recommend people to install GDK twice or something else.

what do @jacobvosmaer and @dzaporozhets think?

Looks good to me. @jacobvosmaer what do you think?

mentioned in issue #40 (closed)

Discussion: #40 (closed).

Since !117 (merged) we have a recommended procedure to have EE and CE GDK's side by side. Closing this.

https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/README.md#gitlab-enterprise-edition

Status changed to closed