[CMake] Upgrade cmake_minimum_required to 3.10

[owent]

Is your feature request related to a problem?
The new cmake (3.30+) will produce a warning like this:

CMake Deprecation Warning at CMakeLists.txt:4 (cmake_minimum_required):Compatibility with CMake < 3.10 will be removed from a future version of
CMake.

Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.CMake (cmake_minimum_required)

Describe the solution you'd like
Since cmake 3.16, there have been a lot of changes of CONFIG package names in FindXXX scripts, and a lot of policies changes.
I just want to discuss if we can upgrade the minimum version to cmake to 3.16 or upper.

Describe alternatives you've considered
We use cmake_minimum_required(VERSION 3.24) and cmake_minimum_required(VERSION 3.27) to avoid writing too much compact codes to keep the same behiour in old and new cmake. It's OK for me to upgrade the minimal requirement to 3.24 or 3.27, but I think we can discuss if it will bring difficulty to other cases and if it's worth doing the upgrade.

[marcalff]

Currently, in a major application instrumented with opentelemetry-cpp, we (at work) use cmake_minimum_required(VERSION 3.14.6).

Unless some features from CMake 3.16/3.24/3.27 are used explicitly, in opentelemetry-cpp/CMakeList.txt, there is no reason to require this minimum version in my understanding, a simple cmake_minimum_required(VERSION 3.10) should have the same effect.

This does not prevent people to use 3.16/3.24/3.27 or later if they want to.

So overall, in favor of the more conservative version 3.10 to clear the deprecation warning.