[feat] dubp-documents: replace panic! by fatal_error!

Cargo.lock

lib/tools/documents/Cargo.toml

lib/tools/documents/src/documents/block.rs

lib/tools/documents/src/documents/certification.rs

lib/tools/documents/src/documents/identity.rs

lib/tools/documents/src/documents/membership.rs

lib/tools/documents/src/documents/mod.rs

lib/tools/documents/src/documents/revocation.rs

lib/tools/documents/src/documents/transaction.rs

lib/tools/documents/src/lib.rs