updates for transmission interface

[jd-lara]

closes #1026

[github-actions]

Performance Results

Version	Precompile Time
Main	3.269840305
This Branch	3.194741751

Version	Build Time
Main-Build Time Precompile	52.713127064
Main-Build Time Postcompile	2.765593777
This Branch-Build Time Precompile	54.135766412
This Branch-Build Time Postcompile	3.05297967

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.28%. Comparing base (5af1ed6) to head (e766959).
Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1087      +/-   ##
==========================================
+ Coverage   80.56%   81.28%   +0.71%     
==========================================
  Files         115      115              
  Lines       12477    12486       +9     
==========================================
+ Hits        10052    10149      +97     
+ Misses       2425     2337      -88     

Flag	Coverage Δ
unittests	81.28% <100.00%> (+0.71%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/core/optimization_container.jl	78.03% <100.00%> (+0.87%)	⬆️
src/core/optimizer_stats.jl	78.37% <100.00%> (+5.04%)	⬆️
src/devices_models/devices/thermal_generation.jl	90.34% <100.00%> (+0.18%)	⬆️
src/services_models/services_constructor.jl	98.97% <ø> (+10.25%)	⬆️

... and 9 files with indirect coverage changes

[jd-lara]

@daniel-thom I need this PR merged to resolve #1071 needed for M2M.