GNSS marks additional informations (geology and monument desc)

[elidana]

Hi @ozym , this pr supersede #196.
I'm assigning you for now as I was inspired by your "site classes" pull request, but this will require a wider audience.

It is a proof of concept for now, aimed at salvaging useful GNSS mark notes (related to site geology and monument additional descriptions) that were not imported from the previous GeoNet metadata database.

Files need to be reviewed and worked on before merging.

Geology description is based on the IGS Sitelog and GeodesyML definitions, as per (ftp://igs.org/pub/station/general/blank.log) and GeodesyML schema definition for the monument and the surrounding area

1.   Site Identification of the GNSS Monument

     Site Name                : 
     Four Character ID        : (A4)
     Monument Inscription     : 
     IERS DOMES Number        : (A9)
     CDP Number               : (A4)
     Monument Description     : (PILLAR/BRASS PLATE/STEEL MAST/etc)
       Height of the Monument : (m)
       Monument Foundation    : (STEEL RODS, CONCRETE BLOCK, ROOF, etc)
       Foundation Depth       : (m)
     Marker Description       : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
     Date Installed           : (CCYY-MM-DDThh:mmZ)
     Geologic Characteristic  : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
       Bedrock Type           : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
       Bedrock Condition      : (FRESH/JOINTED/WEATHERED)
       Fracture Spacing       : (1-10 cm/11-50 cm/51-200 cm/over 200 cm)
       Fault zones nearby     : (YES/NO/Name of the zone)
         Distance/activity    : (multiple lines)
     Additional Information   : (multiple lines)

some more details and reasoning are in the main comment of the closed pull request.

[ozym]

This may need some rework due to conficts etc.

[elidana]

it is also very obsolete now, but still containing some potentially useful info (marksnotes.csv)

/cc @aleks-spes something to look at in peace time

[elidana]

obsolete, replaced by #1751