Server whitelist/blacklist

[MattSturgeon]

Overview

Includes the same config-extension refactoring commit from #143.

Allows the user to setup a whitelist or blacklist in their Freecam config.

If enabled, this will prevent freecam from activating on the restricted servers.

If notifications are enabled, "Freecam is restricted on the current server (server_ip_here)." will be shown when attempting to toggle freecam.

Not convinced my naming/wording (or my config layout) is optimal, so I'm open to feedback & suggestions.

I noticed when testing that cloth-config's StringListListEntry is kinda janky; adding a list-entry doesn't focus the new text field; the text field is invisible, so it's not obvious you can click on it. We may be able to work around this with some mixins and/or autoconfig extensions.

Testing logged in

To test out using DevLogin, you'll want to uncomment the dependency and add this to line 74 of fabric/build.gradle:

loom.runs.create("${variant}LoggedIn") {
    inherit run
    configName "Run logged in"
    programArg "--msa"
}

Then run runNormalLoggedIn or runModrinthLoggedIn. The runLoggedIn task created in the root build.gradle won't work (I'll fix that at some point, will probably wait for devlogin to finish their neoforge support).

Alternatively, use DevAuth by either dropping it into mods and setting defaultEnabled or devauth.enabled as required, or using the devauth PR.

Fixes #117

[MattSturgeon]

These might benefit from some PrefixText or a Tooltip. Perhaps something along the lines of

Add server IPs to this list using the button marked ⊕.
Freecam will only be usable on servers whose IP exactly matches something in this list (case-insensitive).