[#342] Add node convenience functions

[elfenpiff]

Notes for Reviewer

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

References

Closes #342

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 26 lines in your changes missing coverage. Please review.

Project coverage is 80.47%. Comparing base (0d8ba24) to head (f2ca9ae).

Files	Patch %	Lines
iceoryx2/src/node/mod.rs	0.00%	25 Missing :warning:
iceoryx2-bb/posix/src/unique_system_id.rs	0.00%	1 Missing :warning:

Additional details and impacted files

[](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/343?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 #343 +/- ## ========================================== - Coverage 80.54% 80.47% -0.07% ========================================== Files 192 192 Lines 22471 22495 +24 ========================================== + Hits 18099 18103 +4 - Misses 4372 4392 +20 ``` | [Files](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/343?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-bb/posix/src/unique\_system\_id.rs](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/343?src=pr&el=tree&filepath=iceoryx2-bb%2Fposix%2Fsrc%2Funique_system_id.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx#diff-aWNlb3J5eDItYmIvcG9zaXgvc3JjL3VuaXF1ZV9zeXN0ZW1faWQucnM=) | `93.18% <0.00%> (ø)` | | | [iceoryx2/src/node/mod.rs](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/343?src=pr&el=tree&filepath=iceoryx2%2Fsrc%2Fnode%2Fmod.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx#diff-aWNlb3J5eDIvc3JjL25vZGUvbW9kLnJz) | `72.58% <0.00%> (-3.20%)` | :arrow_down: | ... and [2 files with indirect coverage changes](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/343/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx)