Feature request: Create eula.txt with eula=true

[Griefed]

• What is the current behavior?

Using a server pack generated by ServerPackCreator still requires the admin to set eula=true in the eula.txt which is generated when the server is started for the first time.

• What is the wanted/requested behavior?

Have ServerPackCreator generate a eula.txt containing

#By changing the setting below to TRUE you are indicating your agreement to our EULA (https://account.mojang.com/documents/minecraft_eula).
#Mon Oct 04 18:09:13 CEST 2021
eula=true

in the generated server pack so the admin can fire and forget their servers after uploading them to their servers.

• What are your reasons for making this feature request? Provide solid arguments on why I should start working on it.
  Starting the server for the first time, only to have it stop because the eula.txt was generated, then having to set eula=true and starting the server again can become a chore and minor annoyance. Having this feature would make using server packs generated by ServerPackCreator nicer to use and also make running test server packs a little nicer.

[Griefed]

The start-scripts generated by ServerPackCreator should also check for a eula.txt, as proposed by @kreezxil in #81 (comment)

[Griefed]

Will be available in the next alpha release.

[Griefed]

Reopened:

1. Check whether eula.txt exists.

2. If it does not:
   2.1 print

   Mojang's EULA has not yet been accepted. In order to run a Minecraft server, you must accept Mojang's EULA.
   Type "I agree" to indicate that you agree to Mojang's EULA.
   Mojang's EULA is available to read at https://account.mojang.com/documents/minecraft_eula

   2.2 if user specified "I agree"
   write eula=true into eula.txt, else do nothin' and let the modloader yell at them that they need to agree to the EULA.

[Griefed]

Will be available in the next alpha release.

[Griefed]

https://git.griefed.de/Griefed/ServerPackCreator/-/commit/5995f512d2731ebbd161c0ff8e34e37a437da0ac