Add diff fields depends on the added/deleted/updated status

[bilalesi]

1. fix the json to show the values with undefined using the replaced param of JSON.stringify
2. fix the style of the diffing object using <pre/> tag
3. return the diffing object with three different sub-categories of the diffing (added/deleted/updated)

Description

How has this been tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added necessary unit and integration tests.
• I have added screenshots (if applicable), in the comment section.

[codecov-commenter]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (39dd257) 49.65% compared to head (1f24992) 49.56%.
Report is 86 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1424      +/-   ##
===========================================
- Coverage    49.65%   49.56%   -0.09%     
===========================================
  Files          249      249              
  Lines        11339    11346       +7     
  Branches      2652     2654       +2     
===========================================
- Hits          5630     5624       -6     
- Misses        5673     5687      +14     
+ Partials        36       35       -1     

Files	Coverage Δ
src/shared/components/History/index.tsx	40.00% <0.00%> (-4.45%)	⬇️
src/shared/containers/HistoryContainer.tsx	30.00% <25.00%> (-2.00%)	⬇️

... and 2 files with indirect coverage changes

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[Dinika]

If it is the case that value can be null also then it may make sense to protect against that too (maybe using isNil from lodash). Otherwise this is good.

[bilalesi]

here, we are checking if the key/value is exist in the object, basically the diff method, will assign the value undefined when it can not find it in the object, in the resource objects we will not find the null value, since null it's not available in python (mostly used here).