Add Boost 1.84.0 and 1.85.0

[kryachkov]

• I've followed this guide
  step by step carefully. Yes

Fixes #751

[craffael]

I think you should also add support for the new boost libraries charconv and cobalt

• in https://github.com/cpp-pm/hunter/blob/master/cmake/modules/hunter_get_boost_libs.cmake
• add the corresponding directories under cmake/projects/boost/
• add corresponding examples
• Setup some ci jobs in cmake/projects/boost/ci/matrix.json

@NeroBurner What do you think?

[NeroBurner]

LGTM

out of curiosity, do you know why the download server changed from "https://boostorg.jfrog.io to https://archives.boost.io?

[NeroBurner]

I think you should also add support for the new boost libraries charconv and cobalt

* in https://github.com/cpp-pm/hunter/blob/master/cmake/modules/hunter_get_boost_libs.cmake

* add the corresponding directories under cmake/projects/boost/

* add corresponding examples

* Setup some ci jobs in `cmake/projects/boost/ci/matrix.json`

@NeroBurner What do you think?

yes, if those are new libraries which need to be compiled. I'm open for merging a PR doing that