feat: tokenTransfer property exposed in AbstractTokenTransferTransaction

[ivaylogarnev-limechain]

Description:
This PR introduces a getter to expose the tokenTransfers property of AbstractTokenTransferTransaction, making it accessible for use.

Related issue(s):
#2615

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[codecov]

Codecov Report

Attention: Patch coverage is 30.43478% with 16 lines in your changes missing coverage. Please review.

Project coverage is 84.77%. Comparing base (5d11526) to head (0f7f36a).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/token/AbstractTokenTransferTransaction.js	30.43%	16 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2616      +/-   ##
==========================================
- Coverage   84.78%   84.77%   -0.02%     
==========================================
  Files         283      283              
  Lines       71094    71117      +23     
==========================================
+ Hits        60276    60288      +12     
- Misses      10818    10829      +11     

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[agadzhalov]

LGTM