FSharp.Core examples added to doc-comments (#12211)

* WIP - FSharp.Core.Operators - Added examples for:

* Arithmetic
* Bitwise Operators
* Comparison Operators
* Composition and Pipeline Operators
* defaultArgs
* raise, reraise, Failure
* Tuple fst, snd

* FSharp.Core.Operators - Work in Progress

* FSharp.Core - Fixed examples per code review

* Update prim-types.fsi

* Update prim-types.fsi

* Update prim-types.fsi

* Update prim-types.fsi

Co-authored-by: Don Syme <dsyme@users.noreply.github.com>