dirs structure

--HG--
rename : samples/assets/goblins.atlas => samples/openfl/assets/goblins.atlas
rename : samples/assets/goblins.json => samples/openfl/assets/goblins.json
rename : samples/assets/goblins.png => samples/openfl/assets/goblins.png
rename : samples/assets/goblins.skel => samples/openfl/assets/goblins.skel
rename : samples/assets/nme.svg => samples/openfl/assets/nme.svg
rename : samples/assets/spineboy.atlas => samples/openfl/assets/spineboy.atlas
rename : samples/assets/spineboy.json => samples/openfl/assets/spineboy.json
rename : samples/assets/spineboy.png => samples/openfl/assets/spineboy.png
rename : samples/assets/spineboy.skel => samples/openfl/assets/spineboy.skel
rename : samples/project.xml => samples/openfl/project.xml
rename : samples/projectMixTest.xml => samples/openfl/projectMixTest.xml
rename : samples/projectSkeletonTest.xml => samples/openfl/projectSkeletonTest.xml
rename : samples/src/spinehx/AnimationStateTest.hx => samples/openfl/src/spinehx/AnimationStateTest.hx
rename : samples/src/spinehx/MixTest.hx => samples/openfl/src/spinehx/MixTest.hx
rename : samples/src/spinehx/SkeletonTest.hx => samples/openfl/src/spinehx/SkeletonTest.hx