refactor: Initialize addons and check/create files when creating our DefaultFiles and AddonsHandler instances.

feat: Provide HashMap of Key-Value pairs in MinecraftVersion-ForgeVersions format. Use a given Minecraft version as key and receive a string array for available Forge versions for said MInecraft versions.

perf: Retrieve Forge versions from HashMap with Minecraft version as key instead of re-reading list and lists and arrays of data again and again and again,

fix: Improve configuration loading. Prevent NullPointers when reading Minecraft version, modloader, modloader version.

feat: Allow users to specify a custom directory in which server-packs will be generated and stored in.

refactor: Set server-packs directory to /server-packs. Add new configuration to config. Add volume to Dockerfile. Update documentation in README

feat: Check setting for Javapath upon selecting "Install modloader-server?". If it is empty, the user is asked whether they would like to select their Java executable now. If not, the user is warned about the danger of not setting the Javapath

refactor: Switch options to YES_NO to ensure users is always warned about empty javapath setting if they did not choose to select it now.

fix: Hopefully fix ServerPackCreator becoming unresponsive after generating a few server packs. Hopefully closes issue #76.

refactor: Refactor tailers to run in threads. ServerPackCreator can still become unresponsive if you resize during zip-creation, after a Forge server was installed, though.....

fix: Prevent dialog after server pack generation from becoming longer with each run. Removes the path to the server pack, though. Meh

fix: Prevent resizing of window during generation of server pack, to prevent freezes due to Forge installer log spamming. Seriously, that thing spams more than any bot I know of.

ci: Disable Docker pipelines for the time being. Docker is acting up and building Docker images of the webservice-branch is not necessary as I have yet to start actual work on the webservice itself.

fix: Open dialog whether the user wants to browse the generated server pack with our JFrame as parent, instead of JTabbedPane

feat: Allow users to disable cleanups of server packs and downloaded CurseForge modpacks. Can save bandwidth, time and disk operations, if the user is interested in that.

feat: Allow users to disabled server pack overwriting. If de.griefed.serverpackcreator.serverpack.overwrite.enabled=false AND the server pack for the specified modpack ALREADY EXISTS, then a new server pack will NOT be generated. Saves a LOT of time!