Use ntex_dispatcher::Dispatcher instead of ntex-io

[fafhrd91]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 68.42105% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.54%. Comparing base (8437629) to head (6f97808).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/session.rs	55.00%	9 Missing ⚠️
src/dispatcher.rs	33.33%	2 Missing ⚠️
src/delivery.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #82      +/-   ##
==========================================
+ Coverage   63.34%   63.54%   +0.20%     
==========================================
  Files          22       22              
  Lines        3675     3668       -7     
==========================================
+ Hits         2328     2331       +3     
+ Misses       1347     1337      -10     

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