Allow to register custom TaskOrchestrationFactory and TaskActivityFactories

[mcruzdev]

Description

Add two new methods to allow register TaskActivityFactories and TaskOrchestrationFactory directly.

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: #1629

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

[mcruzdev]

Working to add tests 🧪

[codecov]

Codecov Report

❌ Patch coverage is 9.09091% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.82%. Comparing base (02fa2c8) to head (f38a849).

Files with missing lines	Patch %	Lines
...dapr/workflows/runtime/WorkflowRuntimeBuilder.java	9.09%	10 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1630      +/-   ##
============================================
- Coverage     78.95%   78.82%   -0.13%     
  Complexity     2093     2093              
============================================
  Files           228      228              
  Lines          6309     6319      +10     
  Branches        693      693              
============================================
  Hits           4981     4981              
- Misses          976      986      +10     
  Partials        352      352              

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