Server Support

[3arthqu4ke]

Related: headlesshq/mc-runtime-test#60

Closes #253

[github-actions]

Overall Project	73.19% -4.33%	🍏
Files changed	71.16%	🍏

File	Coverage
HelpCommand.java	100%	🍏
LaunchContext.java	100%	🍏
LauncherProperties.java	100%	🍏
ServerTypeDownloader.java	100%	🍏
VersionFactory.java	99.25%	🍏
LaunchOptions.java	96.53% -2.08%	🍏
LaunchServerCommand.java	93.75% -6.25%	🍏
LauncherBuilder.java	93.67%	🍏
FileManager.java	93.55%	🍏
ListServersCommand.java	92.31% -7.69%	🍏
InMemoryLauncher.java	90.38% -9.62%	🍏
PaperDownloader.java	90.24% -9.76%	🍏
VersionMerger.java	90.23% -2.87%	❌
ServerTest.java	89.57% -10.43%	🍏
ServerManager.java	88.45% -11.55%	🍏
IOUtil.java	87.5%	🍏
FabricDownloader.java	87.43% -12.57%	🍏
ProcessFactory.java	86.07% -1.72%	🍏
ModLauncherCommandDownloader.java	82.02% -17.98%	🍏
VersionInfoCache.java	81.71%	🍏
LaunchCommand.java	81.6% -8.49%	🍏
ForgeDownloader.java	78.95% -21.05%	🍏
RemoveServerCommand.java	78.57% -21.43%	🍏
Launcher.java	76.47%	🍏
ForgeCommand.java	73.77% -9.6%	🍏
AbstractLaunchProcessLifecycle.java	73.61% -26.39%	🍏
CacheServerCommand.java	70.49% -29.51%	🍏
FabricCommand.java	68.63%	🍏
AbstractInMemoryGameProcessLauncher.java	66.84% -33.16%	🍏
ForgeInstaller.java	65.71% -5.95%	🍏
ServerCommand.java	64.29% -35.71%	🍏
AddServerCommand.java	63.58% -36.42%	🍏
EulaCommand.java	63.1% -36.9%	🍏
DownloadCommand.java	59.88% -5.78%	❌
InstallerService.java	59.2%	🍏
ServerCommandContext.java	58.65% -41.35%	❌
DownloadService.java	53.97%	🍏
ServerLauncher.java	50.72% -49.28%	❌
VersionUtil.java	45.16% -54.84%	❌
VanillaDownloader.java	41.67% -58.33%	❌
Server.java	30.56% -69.44%	❌
VersionInfoUtil.java	13.43% -86.57%	❌
ServerInMemoryLauncher.java	0%	❌