Refactoring serializer from Dapr.Workflow to Dapr.Common

[WhitWaldo]

Description

Migrating serializer from workflow into Dapr.Common so it can be used more widely. While the migration was made internally to use the serializer in Dapr.Common, changes were made to ensure this isn't a breaking change (for now, but I also added an obsolete flag to make it clear it will be a breaking change alongside the release of Dapr runtime v1.20).

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #[issue number]

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[codecov]

Codecov Report

❌ Patch coverage is 0% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 65.42%. Comparing base (0a41199) to head (acc9b65).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...rc/Dapr.Common/Serialization/JsonDaprSerializer.cs	0.00%	16 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1805      +/-   ##
==========================================
- Coverage   65.54%   65.42%   -0.13%     
==========================================
  Files         295      296       +1     
  Lines        8678     8694      +16     
  Branches     1004     1009       +5     
==========================================
  Hits         5688     5688              
- Misses       2745     2761      +16     
  Partials      245      245              

Flag	Coverage Δ
net10.0	65.41% <0.00%> (-0.13%)	⬇️

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