Issue Description: Hello, I use a DNS redirection and an iframe to show the Dynmap on my website but with Google Chrome I can't login me. This error exist since a long time (2019) with the arrival to the new rule SameSite.

• Dynmap Version: Dynmap-3.2-beta-2-spigot
• Server Version: paper-1.17.1-204.jar
• Pastebin of Configuration.txt: https://pastebin.com/ZKudcM6P
• Other Relevant Data/Screenshots: https://cdn.discordapp.com/attachments/752565120487391233/878914346724524103/unknown.png

[X] I have looked at all other issues and this is not a duplicate
[X] I have been able to replicate this

There are better DNS solutions that a redirect that won't break login. If you want to make a PR feel free and we will review it but otherwise no fix is necessary

What are these best solutions?

A reverse proxy and a standard A record