Add reduct-cpp

[victor1234]

Summary

Changes to recipe: reduct-cpp/[1.15.0]

Motivation

This PR adds a new recipe for the Reduct C++ SDK, a lightweight HTTP client library for interacting with ReductStore.

Details

A previous attempt to contribute this recipe was made in #23524, but it was not completed and eventually closed.

---

• Read the contributing guidelines
• Checked that this PR is not a duplicate: list of PRs by recipe
• Tested locally with at least one configuration using a recent version of Conan

[CLAassistant]

All committers have signed the CLA.

[AbrilRBS]

Hi @victor1234 thanks a lot for taking the time to create this PR.

The current changes do not align with some of the CCI conventions expressed in the package templates at https://github.com/conan-io/conan-center-index/tree/master/docs/package_templates/cmake_package

I've tried to push some changes directly to your branch to clean it up, but I have no permissions to do so from this PR.

Also:

• A test_package needs to be provided for testing
• The LICENSE file in this PR can be removed, it's fetched from the sources
• A patch needs to be added to remove the Conan lookup from the cmake scripts, and added to the conandata.yml

Let me know if you need help with this - I can push the necessary changes if you provide push access to maintainers to this PR

[victor1234]

@AbrilRBS Thanks, I’ve granted editing access. I’ll add test_package

[victor1234]

@AbrilRBS explain your changes, pls

[AbrilRBS]

@AbrilRBS explain your changes, pls

Sure @victor1234!

• The new patch in https://github.com/conan-io/conan-center-index/pull/27398/files#diff-6f079fcd8f8857d72466a412adc98afc362c85484c1fb77cef8baca2ea514900R7 is meant to have the project use the dependencies provided by Conan by not skipping over the find_package usage when CMake can not find Conan, as this might fail for most users, which would then fallback to using FetchContent alternatives and vendorizing all dependencies
• The implements attribute in https://github.com/conan-io/conan-center-index/pull/27398/files#diff-4a218cd9a7df22ed25ae6203ae5d1996447a90d0c2f7184a1ba15da48f995da6R121 is meant to handle fpic/shared/os specific interactions, common for most recipes
• The changes in dependencies versions are to 1)minimize conflicts with the rest of packages in CCI and 2) use version ranges where appropiate
• The new cmake target name for the library in https://github.com/conan-io/conan-center-index/pull/27398/files#diff-4a218cd9a7df22ed25ae6203ae5d1996447a90d0c2f7184a1ba15da48f995da6R121 comes from checking the generated cmake files by upstream, where it expresses that the target should be such
• Lastly, the new traits in the requirements for fmt and openssl https://github.com/conan-io/conan-center-index/pull/27398/files#diff-4a218cd9a7df22ed25ae6203ae5d1996447a90d0c2f7184a1ba15da48f995da6R39 are needed because symbols from those dependencies leak to consumers - locally if you try to compile with -o="*:shared=True" and without these traits, you'll see missing symbols when trying to run the test package

Let me know if this helps :)