make tf broadcast as ss

[baggepinnen]

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[JuliaControlBot]

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Plots were compared to references. 9/11 images have changed, see differences below.
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Difference	Reference Image	New Image
❌ 0.048
✔️ 0.0
✔️ 0.001
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✔️ 0.0
❌ 0.043
❌ 0.059
✔️ 0.0
✔️ 0.01

[codecov]

Codecov Report

Merging #714 (ba4db83) into master (4e82ca1) will increase coverage by 0.05%.
The diff coverage is 100.00%.

❗ Current head ba4db83 differs from pull request most recent head 89ccc81. Consider uploading reports for the commit 89ccc81 to get more accurate results

@@            Coverage Diff             @@
##           master     #714      +/-   ##
==========================================
+ Coverage   90.90%   90.96%   +0.05%     
==========================================
  Files          35       35              
  Lines        3717     3739      +22     
==========================================
+ Hits         3379     3401      +22     
  Misses        338      338              

Impacted Files	Coverage Δ
src/types/StateSpace.jl	92.00% <100.00%> (ø)
src/types/TransferFunction.jl	91.36% <100.00%> (+1.62%)	⬆️

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