* Fixed possible IOException if path is a directory
* Removed File usage
* Catch possible NumberFormatException on invalid config version
!Files.exists -> Files.notExists
* Improved Scheduler API
- Added `Scheduler#builder(plugin)`
This method allows a more simplified builder while maintaining the main requirement of the executor plugin
- Added `Scheduler#taskByPlugin(plugin)`
Allows to obtain the tasks that a plugin has sent to execute and that are currently active
- Added `TaskBuilder#task(Consumer<SchuledTask>)`
Allows to specify a task with access to the task itself with the ability to cancel itself
* Applied requested changes
- Removed tasks builder method
- Added `Scheduler#buildTask(plugin, Consumer<ScheduledTask>)`
* Removed some unused imports
* Applied suggested change
* Fix possible test bug
* Applied more suggested changes
* Fixed tests inside tasks
* Added ability to customize translations
* Removed remaining usage of `Paths#get`
As of java 11 its replacement `Path#of` was created, which is called when using `Paths#get`, besides, according to documentation, it mentions that it can be deprecated at any time
And fix a minor typo in LegacyChannelIdentifier
