feat: send end ACK

[r4mmer]

Motivation

HathorNetwork/hathor-core#1129

Acceptance Criteria

• Send end stream ACK

Security Checklist

• Make sure you do not include new dependencies in the project unless strictly necessary and do not include dev-dependencies as production ones. More dependencies increase the possibility of one of them being hijacked and affecting us.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.46%. Comparing base (21a33bf) to head (58cbc81).
Report is 1 commits behind head on release.

Additional details and impacted files

@@             Coverage Diff             @@
##           release     #762      +/-   ##
===========================================
+ Coverage    80.38%   80.46%   +0.08%     
===========================================
  Files           79       79              
  Lines         6332     6333       +1     
  Branches      1379     1370       -9     
===========================================
+ Hits          5090     5096       +6     
+ Misses        1230     1225       -5     
  Partials        12       12              

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