Yaml serialisation - initial commit

[mintel1]

First commit just to get things up and running. This does not compile and has no rapidyaml - specific code yet.
What I've done is attempt to

• get rapidyaml into the build via conan and cmake - docs on conan.io are pretty clear IMO
• add in yaml specific reader, writer, exception files into the repo based purely on rapidjson with a lot of find and replace

At the moment, my main issues are that

• the build doesn't take all of the new yaml* files into account
• ryml::ryml and the rhyme headers are not recognised

If I can get the config correct so that ryml is recognised, I can start to look at how that lib differs from rapidjson and write code accordingly. It also means I could start looking at other potential serialisations :-)
Thanks!

[mintel1]

I will of course happily adhere to all of the coding guidelines (such as removal of commented out code etc) once I get things to a more presentable state. Also wondering if it could be possible to raise a PR without kicking off the checks, if I know it's going to fail anyway?

[Twon]

I will of course happily adhere to all of the coding guidelines (such as removal of commented out code etc) once I get things to a more presentable state. Also wondering if it could be possible to raise a PR without kicking off the checks, if I know it's going to fail anyway?

Yes, you can mark this as a draft request. It's possible to change an existing PR to a draft one (just Google for how): https://github.blog/2019-02-14-introducing-draft-pull-requests/