Noise filtering tablet input

[Jpe230]

I'm glad that a driver is now included within the framework, it is really plug and play, but a feature that I hope would be useful for tablet users is Noise Filtering, especially for users that use older Wacom tablets. In my testings using my CTL-480, the cursor jitters like crazy to the point that is annoying and distracts me from playing, hence I'm proponing the use of noise filtering.

Looking at OpenTabletDriver's repo and the filters in this repo it seems that we can enhance the capabilities of the driver by adding Hawku's filters to the current implementation.