vxkernel - v0.7.0 : SDL2 and FXCG90 support

*notes*
> full project architecture update
> support the new vxSDK integration
> support 64bits architectures
> support SLD2 "fake" board
> add DMA driver and API
> add Timer driver and API
> update configuration script (now called "vxdev")
> rework Keyboard API
> rework scripts isolation
> many fixes
> many "early-optimisations"
> explicit neovim ALE linter configuration

vxsdk.toml

@@ -1,5 +1,6 @@
 [project]
 name = 'vxkernel'
+version = 0.7.0
 type = 'lib'
 target = [
     'fxcg50',