Add all public servers; Make menu scrollable

[gongchandang49]

Description

Summary
Appended all public homeservers to the current list, and made it scrollable because with current styling it couldn't be displayed well.

Motivation
Today's downtime of matrix.org homesever, that forced me to federate, and I wanted to keep using Cinny for it.

Code context
Integrates correctly with the current codebase, the only changes are some lines appended to config.json and a minor style edit in ServerPicker.tsx. A preview of this functionality can be found on my fork: https://cinnyapp.pages.dev

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[gongchandang49]

I have read the CLA Document and I hereby sign the CLA

[kfiven]

To be added to this list, a server must:

1. have open registration
2. their registration method should be supported in Cinny
3. should be reputable
4. login/register flow needs to be tested before adding.

A quick check shows few of server offline, closed registration.

[gongchandang49]

3. should be reputable

How to objectively measure this?

4. login/register flow needs to be tested before adding.

So I need to test the login and registration flow for every single one of these servers, in order for them to get added?

[kfiven]

To measure server reputation, I usually check how long they are operating, downtime, if they are blocked or not in community moderation list or matrix.org block list.

Yes we need to test the flows as it will feel broken if these features are not working because some server only allow registration from their choice of client.

[gongchandang49]

To measure server reputation, I usually check how long they are operating, downtime, if they are blocked or not in community moderation list or matrix.org block list.

Great! In that case all of them fulfil those requirements, see here https://servers.joinmatrix.org/operators.html (those 3 are requirements manually checked by the list maintainer).
Regarding the ones that are down and/or have closed public registration, I can filter them out easily.

Yes we need to test the flows as it will feel broken if these features are not working because some server only allow registration from their choice of client.

Ok, in that case I will make a dummy account on all those servers and test registration flow. Is it ok that I just confirm the working ones, or do I need to screen record all of the tests? This can be quite time-consuming, honestly.

[kfiven]

Yeah, just testing is enough. No need to record.

[ajbura]

We should use Scroll component from folds for scrollable container. Other "menus" can be looks for ref.

[ajbura]

servers should be sorted A-Z? @kfiven

[kfiven]

yes