feat: 1 CI jobs to pack chocolatey package, 1 CI job to push it

[sevbch]

Context

Added job to push package to Chocolatey wasn't working.

What has been done

• Split previous push-to-chocolatey script into 2 scripts: pack and push. Added arguments to those scripts (convenient in CI + when ran manually).
• Use the pack script to build nupkg package and add it to release assets jobs. Also testing the nupkg in the CI.
• Use the push part to release it to Chocolatey store in the same pipeline as the other releases.

Validation

• Tested all the scripts manually on a Windows VM.
• The pack + test job is ran in this MR and ✅
• About the the push job, we'll be able to confirm it works only on next release.

PR check list

• As much as possible, the changes include tests (unit and/or functional)
• If the changes affect the end user (new feature, behavior change, bug fix) then the PR has a changelog entry (see doc/dev/getting-started.md). If the changes do not affect the end user, then the skip-changelog label has been added to the PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.89%. Comparing base (78bfce1) to head (cca2799).
Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1093   +/-   ##
=======================================
  Coverage   91.89%   91.89%           
=======================================
  Files         144      144           
  Lines        6081     6081           
=======================================
  Hits         5588     5588           
  Misses        493      493           

Flag	Coverage Δ
unittests	91.89% <ø> (ø)

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[agateau-gg]

Some minor logging remarks but this looks good.

GitHub won't let me comment in the right place in the build-os-package script, but it would also be good to add choco to the $REQUIREMENTS in init_system_vars() (like we add npfm in the Linux branch on line 105).

Approving pre-emptively.