some fixes for readerwriter

[ptahmose]

Description

• This fixes the issues seen in context of Sample Code: Alter scene coordinates in a .CZI File #94 .
• While at it, implemented some methods of CziReaderWriter-classes which happened to be not implemented so far.

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?

locally, using the sample code

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 libCZI following Versioning of libCZI 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.

[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (5e5a1fc) 65.39% compared to head (15e7198) 65.97%.

Files	Patch %	Lines
Src/libCZI/CziReaderCommon.cpp	88.88%	6 Missing ⚠️
Src/libCZI/CZIReader.cpp	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #95      +/-   ##
==========================================
+ Coverage   65.39%   65.97%   +0.57%     
==========================================
  Files          84       85       +1     
  Lines       10650    10647       -3     
==========================================
+ Hits         6965     7024      +59     
+ Misses       3685     3623      -62     

Flag	Coverage Δ
windows-latest	65.97% <91.20%> (+0.57%)	⬆️

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[swg08]

The refactoring makes sense.
I haven't checked the changes line by line, but would assume that with the added tests it's made sure that the code still does what it's supposed to do. ;)