feat(mixpanel): add incremental properties support

[Gauravudia]

Description of the change

Resolves INT-190
Add mixpanel incremental properties support
Incremental properties will be send in Track call using mixpanel /engage endpoint.

Type of change

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

Related issues

Fix #1

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers mentioned in a comment
• Changes have been reviewed by at least one other engineer
• Issue from task tracker has a link to this pull request

[codecov]

Codecov Report

Patch coverage: 94.11% and project coverage change: -0.09% ⚠️

Comparison is base (23bb1f6) 86.94% compared to head (693a20c) 86.85%.
Report is 2 commits behind head on develop.

❗ Current head 693a20c differs from pull request most recent head 83e0e72. Consider uploading reports for the commit 83e0e72 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2550      +/-   ##
===========================================
- Coverage    86.94%   86.85%   -0.09%     
===========================================
  Files          600      567      -33     
  Lines        28054    27981      -73     
  Branches      6681     6670      -11     
===========================================
- Hits         24391    24304      -87     
- Misses        3329     3342      +13     
- Partials       334      335       +1     

Files Changed	Coverage Δ
src/v0/destinations/mp/transform.js	97.36% <94.11%> (-0.23%)	⬇️

... and 41 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

87.1% Coverage
0.0% Duplication

[mihir-4116]

LGTM

[mihir-4116]

@Gauravudia can you check why Report Code Coverage action is failing?