Fix DRA to write to .quail, animations subfolder support (#53)

* Fix DRA to write to .quail

* Fix numframe comments

* Fix ani parse

* Separate animation files

* Add sub-folder support

* Add animations subfolder for track/trackdef

* Add optional assets parsing

* Add root writing includes fix

* Fix materialdef yaml

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Co-authored-by: Xackery <xackery@gmail.com>