remove winforms sample projects from main repo

[romanett]

Proposed changes

Remove Winforms Reference Server, Reference Client & control Libraries from Repo.

For the client use the Sample Client from the Samples repository. For the server use the console Server (practically identical).

Related Issues

• Fixes #2477

Types of changes

• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] Enhancement (non-breaking change which adds functionality)
• [ ] Test enhancement (non-breaking change to increase test coverage)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected, requires version increase of Nuget packages)
• [ ] Documentation Update (if none of the other choices apply)

Checklist

• [x] I have read the CONTRIBUTING doc.
• [x] I have signed the CLA.
• [] I ran tests locally with my changes, all passed.
• [ ] I fixed all failing tests in the CI pipelines.
• [ ] I fixed all introduced issues with CodeQL and LGTM.
• [ ] I have added tests that prove my fix is effective or that my feature works and increased code coverage.
• [ ] I have added necessary documentation (if appropriate).
• [ ] Any dependent changes have been merged and published in downstream modules.

Further comments

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 54.54%. Comparing base (be3a3b0) to head (33b731f). Report is 2 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2626 +/- ## ========================================== - Coverage 54.57% 54.54% -0.03% ========================================== Files 347 347 Lines 65545 65575 +30 Branches 13435 13441 +6 ========================================== Hits 35771 35771 - Misses 25860 25885 +25 - Partials 3914 3919 +5 ```

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