Fix CDM Types

[ozangoktan]

Improved and fixed issues with types used for CDM TimeSeries

[codecov]

Codecov Report

Attention: Patch coverage is 7.81250% with 59 lines in your changes missing coverage. Please review.

Project coverage is 61%. Comparing base (1bbdc1b) to head (f67e801).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
CogniteSdk.Types/Common/Converters.cs	0%	43 Missing ⚠️
...ogniteSdk.Types/Beta/DataModels/Core/Timeseries.cs	22%	14 Missing and 1 partial ⚠️
CogniteSdk.Types/Alpha/Common/Identity.cs	0%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##           master   #399   +/-   ##
=====================================
- Coverage      61%    61%   -0%     
=====================================
  Files         355    355           
  Lines        6901   6959   +58     
  Branches      461    472   +11     
=====================================
+ Hits         4163   4179   +16     
- Misses       2487   2529   +42     
  Partials      251    251           

Files with missing lines	Coverage Δ
Oryx.Cognite/src/Common.fs	88% <100%> (+1%)	⬆️
CogniteSdk.Types/Alpha/Common/Identity.cs	0% <0%> (ø)
...ogniteSdk.Types/Beta/DataModels/Core/Timeseries.cs	47% <22%> (-24%)	⬇️
CogniteSdk.Types/Common/Converters.cs	12% <0%> (-7%)	⬇️

... and 4 files with indirect coverage changes