Eris_cbor (eris_cbor.Eris

see https://eris.codeberg.page/eer/eer-007
CBOR Serialization of ERIS Encoded Content

val to_cbor : 
  ?read_capabilities:Eris.Read_capability.t list ->
  (Eris.ref * Eris.block) list ->
  Cborl.item

val of_cbor : 
  Cborl.item ->
  (Eris.ref * Eris.block) list * Eris.Read_capability.t list