Add CziShrink

[m-ringler]

Description

This PR adds the CziShrink desktop application to the repo at /czishrink.
The C/C++ app and library are moved to the /czicompress folder.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Tested with automated tests and manually.

Checklist:

• I followed the Contributing Guidelines.
• I did a self-review.
• I commented my code, particularly in hard-to-understand areas.
• I updated the documentation.
• I updated the version of czicompress following the README (Versioning) depending on the type of change
  • Bug fix -> PATCH
  • New feature -> MINOR
  • Breaking change -> MAJOR
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[github-advanced-security]

CodeQL found more than 10 potential problems in the proposed changes. Check the Files changed tab for more details.

[m-ringler]

@FelixS90 Can you allow the actions that are needed for the .NET build?
It fails with [Error: .github#L1](https://github.com/ZEISS/czicompress/commit/968436f288da18d6f975dc8c6c83841975d3ef22#annotation_15492784809) m-ringler/get-xpath@v3, irongut/codecoveragesummary@v1.3.0, and marocchino/sticky-pull-request-comment@v2 are not allowed to be used in ZEISS/czicompress. Actions in this workflow must be: within a repository that belongs to your Enterprise account, created by GitHub, verified in the GitHub Marketplace, or matching the following: fsfe/reuse-action@*, oxsecurity/megalinter/*. I am not allowed to see or change the repo settings.

We'll also need to change branch policies to not require 'Analyze (cpp)' but 'CodeQL (czicompress) / Analyze CPP (cpp)'.

[ptahmose]

LGTM - great!

[FelixS90]

@FelixS90 Can you allow the actions that are needed for the .NET build? It fails with [Error: .github#L1](https://github.com/ZEISS/czicompress/commit/968436f288da18d6f975dc8c6c83841975d3ef22#annotation_15492784809) m-ringler/get-xpath@v3, irongut/codecoveragesummary@v1.3.0, and marocchino/sticky-pull-request-comment@v2 are not allowed to be used in ZEISS/czicompress. Actions in this workflow must be: within a repository that belongs to your Enterprise account, created by GitHub, verified in the GitHub Marketplace, or matching the following: fsfe/reuse-action@*, oxsecurity/megalinter/*. I am not allowed to see or change the repo settings.

We'll also need to change branch policies to not require 'Analyze (cpp)' but 'CodeQL (czicompress) / Analyze CPP (cpp)'.

Addressed in #8 .