feat(tgtest): export NewPrivateKey

[ernado]

No description provided.

[codecov]

Codecov Report

Merging #826 (a185027) into main (a375981) will decrease coverage by 0.29%.
The diff coverage is 0.00%.

❗ Current head a185027 differs from pull request most recent head 97f30b8. Consider uploading reports for the commit 97f30b8 to get more accurate results

@@            Coverage Diff             @@
##             main     #826      +/-   ##
==========================================
- Coverage   69.99%   69.70%   -0.30%     
==========================================
  Files         443      443              
  Lines       21076    21071       -5     
==========================================
- Hits        14753    14687      -66     
- Misses       5394     5452      +58     
- Partials      929      932       +3     

Impacted Files	Coverage Δ
tgtest/server.go	79.66% <0.00%> (-9.43%)	⬇️
transport/protocol.go	83.87% <0.00%> (-5.79%)	⬇️
telegram/updates/update.go	9.52% <0.00%> (-57.15%)	⬇️
internal/mtproto/salt.go	73.33% <0.00%> (-13.34%)	⬇️
transport/connection.go	64.70% <0.00%> (-8.83%)	⬇️
internal/mtproto/write.go	83.78% <0.00%> (-8.11%)	⬇️
telegram/updates/state_channel.go	45.75% <0.00%> (-7.08%)	⬇️
telegram/updates/internal/e2e/server.go	65.38% <0.00%> (-6.16%)	⬇️
tgtest/send.go	54.05% <0.00%> (-5.41%)	⬇️
tgtest/loop.go	65.00% <0.00%> (-5.00%)	⬇️
... and 24 more

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