Update centralized config

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
start to work on snippets

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
update subtree

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
update subtree

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
update subtree

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
update subtree

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
update subtree

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Squashed 'snippets/' content from commit 16154e1

git-subtree-dir: snippets
git-subtree-split: 16154e1462a8bbb2c5cf48e1101bd3f2c090e0fc
Merge commit 'd9bc31c4ee9df4bf63719748cf12c7af18a50ec6' as 'snippets'
add ruby mode

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>