Support alternative interfaces

[Uxio0]

Context
Currently web UI can show logos or information for some transactions that were trigered using a Safe app. We should extend config service to be able to store metadata also for transactions that were triggered in other places than the web UI (like Android/iOs apps, Safe CLI, MMI extension...) and are not Safe apps, so CGW can read it and choose depending on the transaction origin.

This way we would be able to show nice icons for Android, iOs, etc. generated transactions on the web UI.

Describe the solution you'd like
A new endpoint called /safe-interfaces (or something like that). At least a filter query parameter should exist for shortName, so we can use it on tx origin. Example of information returned:

[
{
    "id": 4,
    "url": "https://github.com/5afe/safe-cli",
    "name": "CLI - Command Line Interface for Safe",
    "shortname": "CLI",
    "iconUrl": "https://app.ens.domains/android-chrome-144x144.png",
    "description": "Command line utility for Gnosis Safe contracts. Use it to manage your Gnosis Safe easily from the command line.",
  }
]