Multi level branching with CATALOG_MIN_BRANCHES and CATALOG_MAX_BRANCHES

[Joxit]

Add new options CATALOG_MIN_BRANCHES and CATALOG_MAX_BRANCHES to configure multi level branching.

Default values for CATALOG_MIN_BRANCHES and CATALOG_MAX_BRANCHES are 1 for backward compatibility.

Example with default value :

Example when I add a new layer (CATALOG_MIN_BRANCHES = 1 and CATALOG_MAX_BRANCHES = 2)

Example when we disable branches (CATALOG_MIN_BRANCHES = 0 and CATALOG_MAX_BRANCHES = 0) this one is for you @logopk

For now there are no limits in branches, so the min can be 1 and max 100 if you want but this will be unreadable.

Any thoughts @mexaniksmirnov ?
closes #293

[mexaniksmirnov]

Hello! Thanks for the features. Can you tell me how to build a project and package it in docker? I didn't manage to assemble it myself :(

[Joxit]

Hi, you do not need to build the project, use the joxit/docker-registry-ui:main tag and you will get the feature 😄

[mexaniksmirnov]

Thank you!