Add the Cinny client (#286)

* Add the Cinny client

Signed-off-by: 3nt3 <gott@3nt3.de>

* Implement suggested edits by thibaultamartin

Signed-off-by: 3nt3 <gott@3nt3.de>

* fix instructions

Signed-off-by: 3nt3 <gott@3nt3.de>

* address things brought up in PR

Signed-off-by: 3nt3 <gott@3nt3.de>

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Signed-off-by: 3nt3 <gott@3nt3.de>