356 Add structured DateTimeElement model

[dzmitryk-kontent-ai]

Motivation

356

Checklist

• [ ] Code follows coding conventions held in this repo
• [ ] Automated tests have been added
• [ ] Tests are passing
• [ ] Docs have been updated (if applicable)
• [ ] Temporary settings (e.g. variables used during development and testing) have been reverted to defaults

How to test

If manual testing is required, what are the steps?

[codecov-commenter]

Codecov Report

Merging #357 (81a9a9a) into master (df2a649) will increase coverage by 88.87%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master     #357       +/-   ##
===========================================
+ Coverage        0   88.87%   +88.87%     
===========================================
  Files           0      125      +125     
  Lines           0     2679     +2679     
  Branches        0      341      +341     
===========================================
+ Hits            0     2381     +2381     
- Misses          0      169      +169     
- Partials        0      129      +129     

Impacted Files	Coverage Δ
....Delivery/ContentItems/DateTimeContentConverter.cs	100.00% <100.00%> (ø)
...Delivery/ContentItems/DateTimes/DateTimeContent.cs	100.00% <100.00%> (ø)
...very/ContentItems/Elements/DateTimeElementValue.cs	100.00% <100.00%> (ø)
Kontent.Ai.Delivery/ContentItems/ModelProvider.cs	90.61% <100.00%> (ø)
...ent.Ai.Delivery/ContentItems/UnknownContentItem.cs	100.00% <0.00%> (ø)
...ivery/QueryParameters/Filters/GreaterThanFilter.cs	100.00% <0.00%> (ø)
...Ai.Urls/Delivery/QueryParameters/Filters/Filter.cs	100.00% <0.00%> (ø)
...y/QueryParameters/Filters/LessThanOrEqualFilter.cs	100.00% <0.00%> (ø)
...livery/ContentItems/RichText/Blocks/HtmlContent.cs	25.00% <0.00%> (ø)
...RichText/Attributes/UseDisplayTemplateAttribute.cs	100.00% <0.00%> (ø)
... and 116 more

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