refactor(express)!: split express executable with token functionality

[milapsheth]

AXE-6276

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 98.40%. Comparing base (53c9a1e) to head (d805fdd).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...racts/express/AxelarExpressExecutableWithToken.sol	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #198      +/-   ##
==========================================
- Coverage   98.66%   98.40%   -0.26%     
==========================================
  Files          47       48       +1     
  Lines         749      754       +5     
  Branches      154      154              
==========================================
+ Hits          739      742       +3     
- Misses          1        3       +2     
  Partials        9        9              

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