Fixed bug on plugin update

• Fixed a bug when the plugin were updated due to a GitHub pages update.

Bug fixes

• Gradle updated to 6.7
• Updated PLA to fix class not found exception caused by Multi-Threading
• Fixed a NPE when the mods dir is empty
• Assets are now downloaded //

Prev. version of OptiFine supported

• Preview versions of OptiFine are now supported by the plugin.
• Added OptifineInfo object

Code improvements

• Some optimizations
• Fixed ghost jar
• downloadServer => UpdaterOptions
• Simplified VanillaDownloader
• Added ModPack step
• Added init check on DownloadInfos#init

Modpacks from CurseForge

• Modpacks from CurseForge added
• CurseModInfos => CurseFileInfos

OptifinePlugin added

• Fixed FMT Gradle import
• Removed toString method
• Fixed 403 error on download & getJson functions
• UpdaterOptions => Builder
• Implementation of OptifinePlugin by @antoineok

Some upgrades

• IFileDeleter interface added.
• Separate class added for mod file deleter => ModFileDeleter
• ModFileDeleter implements IFileDeleter
• IgnoreList added to ModFileDeleter
• Updated FMT (big optimizations)
• Updated PLA
• JavaDoc improvements

Fixes

• Some checks added on extract natives
• Some indentation adjustments
• BuilderAPI v1.5
• Fixed mod file deleter

Added a builder for forge versions

• Added checkEnv method to remove bad forge versions.
• Fixed mod file deleter
• Added a builder for forge versions

Fixes

• Fixed ClassNotFoundException on FlowUpdater Instantiation
• Fixed NPE on forge update