divide API reference by design type

[shalaby7]

Description of the modifications

if you go the HFSS API reference
https://aedt.docs.pyansys.com/version/0.10/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
then you find whole load of functions which makes it bit diffuclt to find the right one
I suggest diving them by deisgn type i.e.
function used in SBR+ to be found under sub category SBR+
functions used under Transient to be found under sub category Transient
functions used uder hyrbid to be found udner sub catgeory hybrid
that will greatly enhance the usability and reduce customer questions

Useful links and references

No response