Windows library building todo's

* [x] Pack and apply new ce-ci win lib builder (I tried last week and "something" failed)
* [x] Start new builds (for All compilers)
* [x] Add scheduled workflows like in compiler-workflows (example https://github.com/compiler-explorer/compiler-workflows/blob/main/.github/workflows/build-daily-SPIRV-Tools.yml#L5) - to build libs nightly for Popular compilers
* [ ] Add scheduled workflows like in compiler-workflows to build libs nightly for All compilers
* [ ] Debug issue where libraries/versions for compiler will build more than once - add more logging at least

Start with the remaining checklist and compare the existing scheduled workflow setup with the linked compiler-workflows example. Trace how the current Windows library builds are triggered and logged, then confirm that all-compilers nightly scheduling and duplicate-build diagnostics are covered. Done means both unchecked tasks work without repeated library/version builds.

Written by the indexing model from the issue text.