[#264] config api

[elfenpiff]

Notes for Reviewer

• Contains the C/C++ binding for iceoryx2::config::Config
• The C++ binding is implemented on basis of the C binding
• One of the global configs use case is to configure multiple non-interacting iceoryx2 domains by defining either a unique global prefix or setting a unique global directory

Pre-Review Checklist for the PR Author

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

Checklist for the PR Reviewer

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

Post-review Checklist for the PR Author

1. All open points are addressed and tracked via issues

References

Relates to #264

[codecov]

Codecov Report

Attention: Patch coverage is 81.11888% with 27 lines in your changes missing coverage. Please review.

Project coverage is 79.46%. Comparing base (5eb3eac) to head (d8a963a).
Report is 16 commits behind head on main.

Files with missing lines	Patch %	Lines
iceoryx2/src/config.rs	40.00%	9 Missing ⚠️
...yx2-cal/src/communication_channel/message_queue.rs	33.33%	4 Missing ⚠️
...l/src/communication_channel/posix_shared_memory.rs	50.00%	4 Missing ⚠️
...yx2-cal/src/communication_channel/process_local.rs	33.33%	4 Missing ⚠️
iceoryx2-cal/src/event/common.rs	55.55%	4 Missing ⚠️
...yx2-cal/src/communication_channel/unix_datagram.rs	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #367      +/-   ##
==========================================
- Coverage   79.56%   79.46%   -0.10%     
==========================================
  Files         193      193              
  Lines       22709    22716       +7     
==========================================
- Hits        18068    18051      -17     
- Misses       4641     4665      +24     

Files with missing lines	Coverage Δ
iceoryx2-bb/container/src/semantic_string.rs	86.57% <100.00%> (ø)
...yx2-cal/src/dynamic_storage/posix_shared_memory.rs	89.54% <100.00%> (ø)
iceoryx2-cal/src/dynamic_storage/process_local.rs	94.07% <100.00%> (ø)
iceoryx2-cal/src/event/process_local.rs	88.35% <100.00%> (ø)
iceoryx2-cal/src/event/unix_datagram_socket.rs	86.60% <100.00%> (ø)
iceoryx2-cal/src/monitoring/file_lock.rs	71.00% <100.00%> (ø)
iceoryx2-cal/src/monitoring/process_local.rs	74.15% <100.00%> (ø)
iceoryx2-cal/src/named_concept.rs	76.19% <ø> (ø)
iceoryx2-cal/src/shared_memory/common.rs	86.38% <100.00%> (ø)
iceoryx2-cal/src/shared_memory_directory/mod.rs	90.41% <100.00%> (ø)
... and 10 more

... and 10 files with indirect coverage changes

[elBoberido]

The easy 36 files are done

[elBoberido]

Would it make sense to return the iox2_unable_to_deliver_strategy_e enum directly?

[elfenpiff]

Maybe, you never did this in any other API so I just followed the other code for consistency reasons.

[elBoberido]

Ah, right. It's an error enum and then one cannot return OK anymore