zenoh-c: new recipe

[valgur]

Adds the C API for Zenoh.

Zenoh is a pub/sub/query protocol unifying data in motion, data at rest and computations. It elegantly blends traditional pub/sub with geo distributed storage, queries and computations, while retaining a level of time and space efficiency that is well beyond any of the mainstream stacks.

https://zenoh.io/
https://github.com/eclipse-zenoh/zenoh-c

Requires #20991 for rust/1.76.0, since the internals of the library are implemented in Rust. All Rust dependencies and the Rust standard library are linked statically into a single static or shared library, so no dependencies on Rust remain for the library consumer.

[valgur]

@jcar87 @memsharded @uilianries Can we please add support for Rust purely as a build tool on CCI via #20991, please? It's fundamentally no different from zulu-openjdk or other compiler toolchains as long as the projects take care to statically link all of the Rust dependencies for the exported C/C++-ABI libraries, as is done by the project in this PR (and is also the default for Rust in general).

[oteffahi]

Ideally it is better to use Rust 1.72 to build zenoh-c, in order to have it support the pre-built plugins/backends from the 0.10.1-rc releases. I notice that 1.76 was recently added to #20991, so maybe we can add 1.72 too?

[conan-center-bot]

Conan v1 pipeline ❌

Failure in build 7 (46df99de05ca1dbe3f3fa4d38c3dd2feba45545f):

• zenoh-c/0.10.1-rc:
  Error running command conan info zenoh-c/0.10.1-rc@#8175ea2d3fa952ba09e4f0be05a1d2bf --json {jsonName} --dry-build -pr {profileName}:

  [settings]
  arch=x86_64
  build_type=Release
  compiler=gcc
  compiler.libcxx=libstdc++11
  compiler.version=5
  os=Linux
  [options]
  zenoh-c:shared=False
  
  ...
  ERROR: Failed requirement 'rust/1.72.1' from 'zenoh-c/0.10.1-rc'
  ERROR: Unable to find 'rust/1.72.1' in remotes
  

---

^{Note: To save resources, CI tries to finish as soon as an error is found. For this reason you might find that not all the references have been launched or not all the configurations for a given reference. Also, take into account that we cannot guarantee the order of execution as it depends on CI workload and workers availability.}

---

Conan v2 pipeline ❌

Note: Conan v2 builds are now mandatory. Please read our discussion about it.

The v2 pipeline failed. Please, review the errors and note this is required for pull requests to be merged. In case this recipe is still not ported to Conan 2.x, please, ping @conan-io/barbarians on the PR and we will help you.

See details:

Failure in build 7 (46df99de05ca1dbe3f3fa4d38c3dd2feba45545f):

• zenoh-c/0.10.1-rc:
  Error running command conan graph info --requires zenoh-c/0.10.1-rc@#8175ea2d3fa952ba09e4f0be05a1d2bf -f json -pr:h /home/conan/workspace/prod-v2/bsr/23767/fbdcb/profile_linux_11_libstdcpp11_17_gcc_release_64.-shared-False.txt -pr:b /home/conan/workspace/prod-v2/bsr/23767/fbdcb/profile_linux_11_libstdcpp11_17_gcc_release_64..txt:

  ======== Computing dependency graph ========
  cmake/3.29.0: Not found in local cache, looking in remotes...
  cmake/3.29.0: Checking remote: conan-center
  cmake/3.29.0: Downloaded recipe revision a055de871f63a7904aa3dcb9f3c61242
  rust/1.72.1: Not found in local cache, looking in remotes...
  rust/1.72.1: Checking remote: conan-center
  rust/1.72.1: Checking remote: c3i_PR-v2-23374
  Graph root
      cli
  Requirements
      zenoh-c/0.10.1-rc#8175ea2d3fa952ba09e4f0be05a1d2bf - Cache
  Build requirements
      cmake/3.29.0#a055de871f63a7904aa3dcb9f3c61242 - Downloaded (conan-center)
  Resolved version ranges
      cmake/[>=3.16 <4]: cmake/3.29.0
  Graph error
      Package 'rust/1.72.1' not resolved: Unable to find 'rust/1.72.1' in remotes.
  ERROR: Package 'rust/1.72.1' not resolved: Unable to find 'rust/1.72.1' in remotes.
  

---

^{Note: To save resources, CI tries to finish as soon as an error is found. For this reason you might find that not all the references have been launched or not all the configurations for a given reference. Also, take into account that we cannot guarantee the order of execution as it depends on CI workload and workers availability.}