Feature/483 Conan 2 Support

[PengZheng]

This PR updates the whole project to support both Conan 1.x and the current Conan 2:

• All generators unsupported by Conan 2 are dropped. CMake, CMakeDeps and CMakeToolchain are used instread.
  • Find modules are updated to account for changed targets name introduced by these generators.
  • CI has been updated to use conanrun.sh/deactivate_conanrun.sh
• Re-implement automatic intra-package dependency deduction in a way supported by both Conan 1 and Conan 2:
  • Conan 2 does not support dynamic defaults. That is, if an option has a default, and user does not specify it, modifying it in configure() method will be forbidden by Conan 2 but allowed by Conan 1. For an extensive discussion with the Conan upstream, see https://github.com/conan-io/conan/issues/14528
• Specify dependency option in configure() method. Previously this is done in requirements() method, which is not supported by Conan 2.
• Use self.requires("openssl/1.1.1t", override=True) to resolve version conflict of openssl caused by civetweb and libcurl. Note that it does not introduce any dependency of openssl into Celix. For an extensive discusson, see https://github.com/conan-io/conan/issues/14535#issuecomment-1687716696
• Update conan_create/ubuntu_build to use Conan 2, leaving other GitHub actions untouched. Due to the low cache hit rate of Conan 2, updating them all will lead to long build time.
• Uppdate documentation to reflect the new conan based workflow.
  • Note that conan build . -bf cmake-build-debug --configure does not work anymore. It will always lead to a full build.
  • A CMake command line generated by conan install is used instead to configure the build directory.
  • Conan is said to produce a CMakeUserPresets.json in the project root, which should enable a seamless integration with CLion. However, this file will cause CLion's CMake window lose correspondence. Removing it from the project root will fix the issue. Thus an extra line tc.user_presets_path = False is added to suppress its production. I reported it to JetBrains (https://youtrack.jetbrains.com/issue/CPP-34818). Once this issue solved, we can expect excellent user experience by combining Conan and CLion.

[codecov-commenter]

Codecov Report

Merging #620 (4e7c7a4) into master (9647e66) will increase coverage by 1.60%. The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master     #620      +/-   ##
==========================================
+ Coverage   80.00%   81.61%   +1.60%     
==========================================
  Files         260      260              
  Lines       34674    34674              
==========================================
+ Hits        27741    28298     +557     
+ Misses       6933     6376     -557     

Files Changed	Coverage Δ
libs/dfi/src/json_serializer.c	82.83% <0.00%> (ø)
...sub_admin_udp_mc/src/pubsub_udpmc_topic_receiver.c	73.68% <100.00%> (+73.68%)	:arrow_up:

... and 10 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more

[PengZheng]

Once https://youtrack.jetbrains.com/issue/CPP-34818 is addressed, using Conan with Clion will be enjoyable. A quick conan install then everything will be setup automatically in CLion.