Add Restcomm-like theme to keycloak

[otsakir]

Add/customize a keycloak theme with typical Restcomm styling. The theme should be installed both to identity.restcomm.com and deployments with own auth server.

As a first iteration, just replacing the logo should be enough.

[otsakir]

Customization seems straight forward. Themes in keycloak are separated into individual directories and needs to provide his own theme directory under 'themes'. In addition 'restcomm' realm so me configured that it uses the 'restcomm' theme for 'login' views.

The question is what's the optimal way to do that in docker.

[otsakir]

Login will look like this:

and registration like this:

[deruelle]

@otsakir looks consistent. Do we really need the realm stuff there ? It seems a bit confusing for non developers

@ipsilantide can you check this out and comment potentially with a design that fits the new theme later on ?

[otsakir]

@deruelle , we can remove that altogether or leave just "restcomm". wdyt? We can enable later if needed.

[deruelle]

@otsakir Restcomm is already present as a logo I think we can remove restcomm and realm as it would be redundant with the logo.

[otsakir]

ok

[deruelle]

@otsakir One thing we could add later would the organization ie mycompany.restcomm.com by example

[otsakir]

ok, @deruelle. I'll see what can be done towards this direction.

[ipsilantide]

OK @deruelle. I will