[#490] Enable loan_slice APIs in CXX bindings

[orecham]

Notes for Reviewer

1. Implement iox::Slice
2. Implement loan_slice APIs in C++ binding
3. Expose properties payload_alignment and max_slice_len in C++ binding

Pre-Review Checklist for the PR Author

1. [x] Add sensible notes for the reviewer
2. [x] PR title is short, expressive and meaningful
3. [x] Relevant issues are linked in the References section
4. [x] Every source code file has a copyright header with SPDX-License-Identifier: Apache-2.0 OR MIT
5. [x] Branch follows the naming format (iox2-123-introduce-posix-ipc-example)
6. [x] Commits messages are according to this guideline
   • [x] Commit messages have the issue ID ([#123] Add posix ipc example)
   • [x] Commit author matches Eclipse Contributor Agreement (and ECA is signed)
7. [x] Tests follow the best practice for testing
8. [x] Changelog updated in the unreleased section including API breaking changes
9. [x] Assign PR to reviewer
10. [x] All checks have passed (except task-list-completed)

Checklist for the PR Reviewer

• [x] Commits are properly organized and messages are according to the guideline
• [x] Unit tests have been written for new behavior
• [x] Public API is documented
• [x] PR title describes the changes

Post-review Checklist for the PR Author

1. [x] All open points are addressed and tracked via issues

References

Closes #490

[elfenpiff]

When the Slice question/strategy is clear and implemented we can merge it.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 79.28%. Comparing base (e7d1f59) to head (4dfb681). Report is 23 commits behind head on main.

Files with missing lines	Patch %	Lines
iceoryx2/src/port/publisher.rs	0.00%	3 Missing :warning:

Additional details and impacted files

[](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/492?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx) ```diff @@ Coverage Diff @@ ## main #492 +/- ## ========================================== + Coverage 79.24% 79.28% +0.04% ========================================== Files 200 200 Lines 23762 23765 +3 ========================================== + Hits 18830 18842 +12 + Misses 4932 4923 -9 ``` | [Files with missing lines](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/492?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx) | Coverage Δ | | |---|---|---| | [iceoryx2/src/port/publisher.rs](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/492?src=pr&el=tree&filepath=iceoryx2%2Fsrc%2Fport%2Fpublisher.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx#diff-aWNlb3J5eDIvc3JjL3BvcnQvcHVibGlzaGVyLnJz) | `84.66% <0.00%> (-0.43%)` | :arrow_down: | ... and [7 files with indirect coverage changes](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/492/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx)