[NGRM] - Customize "area" and "gradientfill" display option for logs

[mirisb]

When rendering continuous logs in track as "area" or "gradientfill", there is a frame colored by the log color around the entire colored area. We would like to change this display such that instead of a frame, only the curve of the log will be colored by the log color.

Suggestion to implement this would be to have area and gradient filled to be optionally displayed without a frame and allow to combine display options:

{   ...,  
    frame: false, 
    type: "area" | "line"
}

such that the log would be displayed as a line and behind it filled area without a frame

[Vladimir-Kokin]

"area" track is implemented in videx-wellog so correspondent issue is created in videx project equinor/videx-wellog#211

"gradientfill" track is implemented in WellLogViewer so such option should be implemented in it