Server connection management

[bidluo]

Objective

To provide users with the ability to add and remove federated sites from the app and provide a list of default sites.

User Stories

1. As a user, I want to add new federated sites to my list, so I can view and interact with the communities on those sites.
2. As a user, I want to remove federated sites from my list, so I can curate the content I see.
3. As a user, I want a list of default sites provided, so I can quickly start browsing without needing to add sites manually.

Acceptance Criteria

1. Users can add a new site by entering the site's URL.
2. Users can remove an existing site from their list.
3. Users can select a specific site to view.
4. Users are presented with a list of default sites upon app installation.

Out of Scope

• Interleaving content from multiple sites into a single mixed feed.
• Validation of site URLs during the addition process.
• The ability to modify the details of an existing site on the list.