implement typed_hvcat for LTI systems

[baggepinnen]

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[JuliaControlBot]

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✔️ 0.008

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.43%. Comparing base (5dd6602) to head (5c2d251).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #988      +/-   ##
==========================================
+ Coverage   92.42%   92.43%   +0.01%     
==========================================
  Files          41       41              
  Lines        4990     4999       +9     
==========================================
+ Hits         4612     4621       +9     
  Misses        378      378              

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