🛠️ [TASK] : Create a type representing a list of CIP-0134 URIs

[stanislav-tkach]

After creating a type for CIP-0134 URIs as described in this issue, a new type representing a list of such URIs should be added. See this comment for more details. The relevant code is located in the validate_stake_public_key function in rust/rbac-registration/src/cardano/cip509/validation.rs.