iox-#2329 Add iox::Atomic

[elBoberido]

Notes for Reviewer

This PR adds the iox::Atomic as drop-in replacement for the std::atomic. The std::atomic will be replaced in a follow up PR.

Pre-Review Checklist for the PR Author

1. [x] Code follows the coding style of CONTRIBUTING.md
2. [x] Tests follow the best practice for testing
3. [x] Changelog updated in the unreleased section including API breaking changes
4. [x] Branch follows the naming format (iox-123-this-is-a-branch)
5. [x] Commits messages are according to this guideline
   • [x] Commit messages have the issue ID (iox-#123 commit text)
   • [x] Commit author matches Eclipse Contributor Agreement (and ECA is signed)
6. [x] Update the PR title
   • Follow the same conventions as for commit messages
   • Link to the relevant issue
7. [x] Relevant issues are linked
8. [x] Add sensible notes for the reviewer
9. [x] All checks have passed (except task-list-completed)
10. [x] Assign PR to reviewer

Checklist for the PR Reviewer

• [x] Consider a second reviewer for complex new features or larger refactorings
• [x] Commits are properly organized and messages are according to the guideline
• [x] Code according to our coding style and naming conventions
• [x] Unit tests have been written for new behavior
• [x] Public API changes are documented via doxygen
• [x] Copyright owner are updated in the changed files
• [x] All touched (C/C++) source code files from iceoryx_hoofs have been added to ./clang-tidy-diff-scans.txt
• [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

• Relates to #2329

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 78.21%. Comparing base (912931a) to head (74caf49). Report is 5 commits behind head on main.

Additional details and impacted files

[](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx/pull/2331?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 #2331 +/- ## ========================================== + Coverage 78.07% 78.21% +0.14% ========================================== Files 432 433 +1 Lines 15920 16028 +108 Branches 2303 2303 ========================================== + Hits 12430 12537 +107 Misses 2644 2644 - Partials 846 847 +1 ``` | [Flag](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx/pull/2331/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx/pull/2331/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx) | `78.04% <100.00%> (+0.14%)` | :arrow_up: | | [unittests_timing](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx/pull/2331/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx) | `14.84% <0.00%> (-0.11%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx/pull/2331?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 | | |---|---|---| | [...atform/generic/include/iceoryx\_platform/atomic.hpp](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx/pull/2331?src=pr&el=tree&filepath=iceoryx_platform%2Fgeneric%2Finclude%2Ficeoryx_platform%2Fatomic.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx#diff-aWNlb3J5eF9wbGF0Zm9ybS9nZW5lcmljL2luY2x1ZGUvaWNlb3J5eF9wbGF0Zm9ybS9hdG9taWMuaHBw) | `100.00% <100.00%> (ø)` | | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx/pull/2331/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx)