Ensure z_bytes example is available on all bindings

[Mallets]

Describe the feature

It's important to show how to serialize/deserialize data through the ZBytes. An example of Protobuf serialization should also be provided

Basic examples:

• [x] Rust https://github.com/eclipse-zenoh/zenoh/blob/dev/1.0.0/examples/examples/z_bytes.rs
• [x] C (zenoh-c) https://github.com/eclipse-zenoh/zenoh-c/issues/687 https://github.com/eclipse-zenoh/zenoh-c/pull/708 @DenisBiryukov91 @milyin
• [x] C (zenoh-pico) https://github.com/eclipse-zenoh/zenoh-pico/issues/662 https://github.com/eclipse-zenoh/zenoh-pico/pull/673 @sashacmc @jean-roland
• [x] C++ https://github.com/eclipse-zenoh/zenoh-cpp/issues/216 https://github.com/eclipse-zenoh/zenoh-cpp/pull/218 @DenisBiryukov91 @yellowhatter
• [x] Python https://github.com/eclipse-zenoh/zenoh-python/issues/318 https://github.com/eclipse-zenoh/zenoh-python/pull/325 @wyfo
• [x] Kotlin https://github.com/eclipse-zenoh/zenoh-kotlin/issues/219 @DariusIMP

Protobuf example:

• [x] Rust https://github.com/eclipse-zenoh/zenoh/blob/ddcc8f1d8c114ca256df3939c303bcbdc1f80197/examples/examples/z_bytes.rs#L154
• [ ] C (zenoh-c) @DenisBiryukov91 @milyin
• [ ] C (zenoh-pico) @sashacmc @jean-roland
• [x] C++ https://github.com/eclipse-zenoh/zenoh-cpp/blob/6e72af80b18a366c7bb12ccc4eafb40e82b6c1a2/examples/universal/z_bytes.cxx#L125
• [x] Python https://github.com/eclipse-zenoh/zenoh-python/blob/90e74618e0aa16e6677c26e8a0c6ef44dfe8c7b2/examples/z_bytes.py#L72
• [ ] Kotlin @DariusIMP

[DariusIMP]

On Kotlin: https://github.com/eclipse-zenoh/zenoh-kotlin/blob/main/examples/src/main/kotlin/io.zenoh/ZBytes.kt

[yellowhatter]

@DenisBiryukov91 , as Michael is off next week, let's put you on zenoh-c and I will take C++

[Mallets]

This was completed as part of the 1.0 release