iox-#2066 Remove compiler switches for c++17

[elBoberido]

Pre-Review Checklist for the PR Author

1. Add a second reviewer for complex new features or larger refactorings
2. Code follows the coding style of CONTRIBUTING.md
3. Tests follow the best practice for testing
4. Changelog updated in the unreleased section including API breaking changes
5. Branch follows the naming format (iox-123-this-is-a-branch)
6. Commits messages are according to this guideline
   • Commit messages have the issue ID (iox-#123 commit text)
   • Commit author matches Eclipse Contributor Agreement (and ECA is signed)
7. Update the PR title
   • Follow the same conventions as for commit messages
   • Link to the relevant issue
8. Relevant issues are linked
9. Add sensible notes for the reviewer
10. All checks have passed (except task-list-completed)
11. All touched (C/C++) source code files from iceoryx_hoofs are added to ./clang-tidy-diff-scans.txt
12. Assign PR to reviewer

Notes for Reviewer

This PR removes the compiler switches for C++17 and deprecates the IOX_MAYBE_UNUSED, IOX_FALLTHROUGH and IOX_NO_DISCARD macros in favor of the C++17 [[maybe_unused]], [[fallthrough]] and [[no_discard]] attributes.

In addition std::byte is used instead of iox::byte.

Checklist for the PR Reviewer

• Commits are properly organized and messages are according to the guideline
• Code according to our coding style and naming conventions
• Unit tests have been written for new behavior
• Public API changes are documented via doxygen
• Copyright owner are updated in the changed files
• All touched (C/C++) source code files from iceoryx_hoofs have been added to ./clang-tidy-diff-scans.txt
• PR title describes the changes

Post-review Checklist for the PR Author

1. All open points are addressed and tracked via issues

References

• Closes Switch to C++17 on all platforms #2066
• Closes Setting IOX_NO_DISCARD in QNX #638
• Closes Replace iox::byte_t with std::byte #1900

[codecov]

Codecov Report

Merging #2103 (b0e68f7) into master (6eb6fb8) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2103   +/-   ##
=======================================
  Coverage   80.29%   80.29%           
=======================================
  Files         417      417           
  Lines       16130    16132    +2     
  Branches     2251     2253    +2     
=======================================
+ Hits        12951    12953    +2     
  Misses       2384     2384           
  Partials      795      795           

Flag	Coverage Δ
unittests	80.08% <100.00%> (+<0.01%)	⬆️
unittests_timing	15.30% <0.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...container/include/iox/fixed_position_container.hpp	100.00% <100.00%> (ø)
iceoryx_dust/posix/ipc/source/message_queue.cpp	62.96% <ø> (ø)
...oofs/container/include/iox/uninitialized_array.hpp	100.00% <ø> (ø)
...unctional/include/iox/detail/storable_function.hpp	100.00% <ø> (ø)
...clude/iceoryx_hoofs/internal/cxx/variant_queue.inl	80.00% <ø> (ø)
...ceoryx_hoofs/internal/posix_wrapper/posix_call.inl	98.18% <100.00%> (ø)
...include/iceoryx_hoofs/posix_wrapper/posix_call.hpp	100.00% <ø> (ø)
iceoryx_hoofs/posix/filesystem/source/file.cpp	34.71% <ø> (ø)
...ceoryx_hoofs/primitives/include/iox/attributes.hpp	100.00% <ø> (ø)
...ryx_hoofs/vocabulary/include/iox/detail/string.inl	96.16% <100.00%> (+0.02%)	⬆️
... and 11 more

[mossmaurice]

LGTM, thanks!

The merge-base changed after approval.