SSDF PW6.1: Documentation of build servers, compilers, tools, build process

[Haroon-Khel]

PW.6.1: Use securely configured compilers and build tools
Adoptium will maintain process documentation detailing all build servers used, all compilers & tools and versions of each used for the offering and summarizing the build process for each.

ref https://github.com/adoptium/adoptium/issues/124

This issue will be used to discuss the documentation concerning our build servers, compilers, tools etc. (any current documentation and ideas/improvements to the documentation)