Json Encoder: namespace URI handling

[MarkusHorstmann]

Proposed changes

Changes to the JSON Encoder to make it easier to deal with namespace URIs.

Related Issues

• Fixes JSON Encoder should provide option to encode NamespaceUri for all namespaces, including index 1 #2117, JSON Encoder does not honor ForceNamespaceUri for QualifiedNames #2118.

Types of changes

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• 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

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• I ran tests locally with my changes, all passed.
• I fixed all failing tests in the CI pipelines.
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• I have added tests that prove my fix is effective or that my feature works and increased code coverage.
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[mregen]

Hi @MarkusHorstmann , could you split up the PR in the bugfix and enhancement?
Technically the Force1 is an API change and may also need some discussion.
The bugfix with the Unit test in your Issue #2118 could directly be merged in the upcoming 371 bugfix release.

[codecov]

Codecov Report

Merging #2119 (ba8d8f0) into master (24845eb) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2119      +/-   ##
==========================================
- Coverage   57.93%   57.93%   -0.01%     
==========================================
  Files         324      324              
  Lines       61677    61677              
==========================================
- Hits        35735    35731       -4     
- Misses      25942    25946       +4     

Impacted Files	Coverage Δ
Stack/Opc.Ua.Core/Types/Encoders/JsonEncoder.cs	82.20% <100.00%> (ø)

... and 9 files with indirect coverage changes