[FIX] Server embedder sends bathes of 999 image through one connection

[PrimozGodec]

Issue

Fixes #148

Description of changes

Since connection by hyper fails every 1000 images we send baches of 999 images through one connection.

Includes

• [X] Code changes
• [ ] Tests
• [ ] Documentation

[codecov[bot]]

Codecov Report

Merging #149 into master will increase coverage by 0.12%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #149      +/-   ##
==========================================
+ Coverage   58.73%   58.86%   +0.12%     
==========================================
  Files          13       13              
  Lines        3301     3311      +10     
  Branches      488      491       +3     
==========================================
+ Hits         1939     1949      +10     
  Misses       1227     1227              
  Partials      135      135

[PrimozGodec]

@matjazp can you check this PR?