Fix minor inconsistencies in KPT variable naming

[sjboeing]

No description provided.

[sjboeing]

@SGhZD: let me know the details here, and I will have a look at it.

[SGhZD]

This shows 'variable name in KPT' : 'variable name in DALES'
{ 'qiadv':'iadv', 'qladv':'ladv','pres':'pressure_f','zf':'height_f', 'zh':height_h}

[jchylik]

Still there is also an option to just keep the names as they are and include alternative variable loading names in Dales (done that before )
The advantage is that we would be able to use the whole library of cases without changes.

[jchylik]

I am still bit puzzled by the variable of half level height.

line 18 in lagtraj/forcings/conversion/targets/kpt.py
"zh": {"units": "m", "long_name": "half level height"},

I thought that the half level height is directly dependent on the array of full level height. Isn't it?

[sjboeing]

Addressed in #202