feat: Expose SSH ident from ssh_client

[Remulic]

It is necessary to connect to a jump server that only allows specific client versions
SSHTransport already supports customizing the software version portion of the SSH identification string via its parameter.
However, this capability is not exposed through SSHClient

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 41.15%. Comparing base (91908e2) to head (d48643f).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #135      +/-   ##
==========================================
+ Coverage   41.01%   41.15%   +0.14%     
==========================================
  Files          60       60              
  Lines        4640     4641       +1     
==========================================
+ Hits         1903     1910       +7     
+ Misses       2737     2731       -6     

Flag	Coverage Δ
unittests	41.15% <100.00%> (+0.14%)	⬆️

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