Create fileformats.md

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doc/Fileformats.md

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+#### Supported file formats ####
+
+__Importers__:
+
+- 3D
+- [3DS](https://en.wikipedia.org/wiki/.3ds)
+- [3MF](https://en.wikipedia.org/wiki/3D_Manufacturing_Format)
+- AC
+- [AC3D](https://en.wikipedia.org/wiki/AC3D)
+- ACC
+- AMJ
+- ASE
+- ASK
+- B3D
+- [BLEND](https://en.wikipedia.org/wiki/.blend_(file_format))
+- [BVH](https://en.wikipedia.org/wiki/Biovision_Hierarchy)
+- CMS
+- COB
+- [DAE/Collada](https://en.wikipedia.org/wiki/COLLADA)
+- [DXF](https://en.wikipedia.org/wiki/AutoCAD_DXF)
+- ENFF
+- [FBX](https://en.wikipedia.org/wiki/FBX)
+- [glTF 1.0](https://en.wikipedia.org/wiki/GlTF#glTF_1.0) + GLB
+- [glTF 2.0](https://en.wikipedia.org/wiki/GlTF#glTF_2.0):
+  At the moment for glTF2.0 the following extensions are supported:
+  + KHR_lights_punctual ( 5.0 )
+  + KHR_materials_pbrSpecularGlossiness ( 5.0 )
+  + KHR_materials_unlit ( 5.0 )
+  + KHR_texture_transform ( 5.1 under test )
+- HMB
+- IFC-STEP
+- IRR / IRRMESH
+- [LWO](https://en.wikipedia.org/wiki/LightWave_3D)
+- LWS
+- LXO
+- [M3D](https://bztsrc.gitlab.io/model3d)
+- MD2
+- MD3
+- MD5
+- MDC
+- MDL
+- MESH / MESH.XML
+- MOT
+- MS3D
+- NDO
+- NFF
+- [OBJ](https://en.wikipedia.org/wiki/Wavefront_.obj_file)
+- [OFF](https://en.wikipedia.org/wiki/OFF_(file_format))
+- [OGEX](https://en.wikipedia.org/wiki/Open_Game_Engine_Exchange)
+- [PLY](https://en.wikipedia.org/wiki/PLY_(file_format))
+- PMX
+- PRJ
+- Q3O
+- Q3S
+- RAW
+- SCN
+- SIB
+- SMD
+- [STP](https://en.wikipedia.org/wiki/ISO_10303-21)
+- [STL](https://en.wikipedia.org/wiki/STL_(file_format))
+- TER
+- UC
+- VTA
+- X
+- [X3D](https://en.wikipedia.org/wiki/X3D)
+- XGL
+- ZGL
+
+Additionally, some formats are supported by dependency on non-free code or external SDKs (not built by default):
+
+- [C4D](https://en.wikipedia.org/wiki/Cinema_4D) (https://github.com/assimp/assimp/wiki/Cinema4D-&-Melange) IMporting geometry + node hierarchy are currently supported
+
+__Exporters__:
+
+- DAE (Collada)
+- STL
+- OBJ
+- PLY
+- X
+- 3DS
+- JSON (for WebGl, via https://github.com/acgessler/assimp2json)
+- ASSBIN
+- STEP
+- glTF 1.0 (partial)
+- glTF 2.0 (partial)
+- 3MF ( experimental )
+- FBX ( experimental )