add doc with links to all internal build definitions, etc. (#7505)
add doc with links to all internal build definitions, etc. (#7505)


dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,cloudRoutine/FSharp.Compiler.Service,dsyme/fsharp,cloudRoutine/FSharp.Compiler.Service,cloudRoutine/FSharp.Compiler.Service,dsyme/fsharp