beremiz

Extend HMI:JsonTable, create Edit CSV POU, create example, add some doc (#41)

* Extend Jsontable widget, create Edit CSV POU, create example for both

* Add doc for HMI:Image and HMI:JsonTable

* Expand example to include HMI:Image
input,smta,1,DINT,0
input,smtb,1,DINT,1
input,smtc,1,DINT,2
input,smtd,1,DINT,3
input,smte,1,DINT,4
output,smtf,1,False,DINT,0
output,smtg,1,False,DINT,1
output,smth,1,False,DINT,2
output,smti,1,False,DINT,3
output,smtj,1,False,DINT,4