Add Server Favourite

[Atomic-Laboratory]

If your pull request is not translation or serverlist-related, read the list of requirements below and check each box:

• I have read the contribution guidelines.
• I have ensured that my code compiles, if applicable.
• [?] I have ensured that any new features in this PR function correctly in-game, if applicable.

What it would look like if accepted.

Things that may cause this PR to be not accepted:

1. If doInit is changed to false, so the server name bar doesn't appear if servers are offline, there is strange behavior when there are more than 1 sever in a server group.
   
   Works fine if there is only 1 server, or if doInit is true.

2. There is no tool-tip describing what the star button does (for accessibility?)

I ask anyone who is knowledgeable to help me with this PR, I'm trying my best 😭

[Atomic-Laboratory]

doInit should be false to prevent things like this from happening