Iox #482 Implement iceoptions, icehello, iceensemble and re-write icedelivery example

[mossmaurice]

Pre-Review Checklist for the PR Author

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

Notes for Reviewer

• Create icehello
• Create iceoptions example
• Replace ice_multi_publisher with iceensemble example
• s/-ex/-cpp in binary and runtime names

Todo

• icecubetray example will be added in a follow-up PR

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
• PR title describes the changes

Post-review Checklist for the PR Author

1. All open points are addressed and tracked via issues

References

• Closes partly Extend documentation for 1.0 release and website #482

[codecov]

Codecov Report

Merging #655 (196cb13) into release_1.0 (e6a3293) will decrease coverage by 0.08%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           release_1.0     #655      +/-   ##
===============================================
- Coverage        74.54%   74.46%   -0.09%     
===============================================
  Files              317      315       -2     
  Lines            11217    11213       -4     
  Branches          1969     1969              
===============================================
- Hits              8362     8350      -12     
- Misses            2078     2086       +8     
  Partials           777      777              

Flag	Coverage Δ
unittests	74.42% <ø> (-0.09%)	⬇️
unittests_timing	30.95% <ø> (-0.29%)	⬇️

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

Impacted Files	Coverage Δ
...posh/roudi/memory/iceoryx_roudi_memory_manager.hpp	12.50% <0.00%> (-87.50%)	⬇️
..._utils/source/posix_wrapper/unix_domain_socket.cpp	56.68% <0.00%> (-1.85%)	⬇️
...ils/include/iceoryx_utils/internal/cxx/smart_c.inl	87.50% <0.00%> (-1.57%)	⬇️
iceoryx_utils/source/posix_wrapper/timer.cpp	60.52% <0.00%> (-0.88%)	⬇️
iceoryx_posh/source/roudi/roudi.cpp	56.09% <0.00%> (-0.27%)	⬇️
iceoryx_posh/source/roudi/process_manager.cpp	64.13% <0.00%> (-0.20%)	⬇️
...posh/include/iceoryx_posh/internal/roudi/roudi.hpp	77.77% <0.00%> (ø)
...osh/source/roudi/application/iceoryx_roudi_app.cpp	30.76% <0.00%> (ø)
...urce/roudi/memory/iceoryx_roudi_memory_manager.cpp	87.50% <0.00%> (ø)
...include/iceoryx_posh/internal/roudi/roudi_lock.hpp
... and 3 more

[elfenpiff]

• Please look for all occurrence of the word topic and replace it with sample when it makes sense
• Please use grammarly or another spell checker for the markdown files

[FerdinandSpitzschnueffler]

Reviewed the first 16 files, will continue later.

All review findings addressed