Distribution > Improve how external dependency header files are imported

[argmarco-tkd]

Describe the enhancement requested

Today, we copy/paste required header files from external dependencies into the parquet/encryption/external/third_party directory. We need a better strategy for how to get those dependencies into the Arrow code.

Component(s)

C++

[argmarco-tkd]

We need to evaluate if retrieving the header files via CMake is an option/alternative

https://coderefinery.github.io/cmake-workshop/fetch-content/

[argmarco-tkd]

Implemented in #178