fallible serialization

[milyin]

• z_try_serialize function added
• trait TrySerialize added. The trait Serialize remains for infallible serialization
  • For basic types and containers which allows infallible serialization this trait is implemeted as TrySerialize<Error = Infallible>
  • The Serialize trait is implemeted automatically for all types which implements TrySerialize<Error = Infallible>
  • It's possible to implement Serialize explicitly for types which already implements TrySerialize<Error = ZSerializeError> or any other error. This is necessary for e.g. HashMap
• fallible serialization of CString added: in demonstration purpose and may be for future use in zenoh-c

[github-actions[bot]]

PR missing one of the required labels: {'internal', 'documentation', 'new feature', 'bug', 'enhancement', 'breaking-change', 'dependencies'}

[github-actions[bot]]

PR missing one of the required labels: {'bug', 'dependencies', 'new feature', 'documentation', 'breaking-change', 'enhancement', 'internal'}

[Mallets]

@milyin At the end we decided to not include this PR in 1.0.0. Therefore I believe it can be safely closed as no longer relevant.