added expanded details methods

[ankitdas13]

Api doc reference

Fetch a Payment (With Expanded Card Details)

Fetch a Payment (With Expanded EMI Details)

Fetch a Payment (With Expanded Offers Details)

Fetch a Payment (With Expanded UPI Details)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.91%. Comparing base (0a25a2d) to head (d5c1569).

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #312      +/-   ##
============================================
+ Coverage     83.77%   85.91%   +2.13%     
- Complexity      306      309       +3     
============================================
  Files            58       58              
  Lines           709      710       +1     
  Branches         31       31              
============================================
+ Hits            594      610      +16     
+ Misses           91       75      -16     
- Partials         24       25       +1     

Flag	Coverage Δ
tests	85.91% <100.00%> (+2.13%)	⬆️

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