SDKS-4669: Add support for phone number extensions in PhoneNumberCollector

[vibhorgoswami]

JIRA Ticket

SDKS-4669

Description

This PR adds support for the phone number extension field. It was tested using the E2E test case.

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 46.70%. Comparing base (608af4f) to head (ec062ad).
⚠️ Report is 15 commits behind head on develop.

Files with missing lines	Patch %	Lines
...identity/davinci/collector/PhoneNumberCollector.kt	50.00%	0 Missing and 4 partials ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             develop     #177       +/-   ##
==============================================
+ Coverage      27.66%   46.70%   +19.04%     
- Complexity       901     1270      +369     
==============================================
  Files            299      305        +6     
  Lines           8957     9213      +256     
  Branches        1272     1310       +38     
==============================================
+ Hits            2478     4303     +1825     
+ Misses          6195     4337     -1858     
- Partials         284      573      +289     

Flag	Coverage Δ
integration-tests	26.56% <50.00%> (?)
unit-tests	27.68% <37.50%> (+0.01%)	⬆️

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[spetrov]

LGTM! 👍🏻