Unit and scale in schemas

[nbuffon]

Schemas are missing the unit and scale for each values.

For each value, add two fields:

• Unit (metre, degree, etc.) as in ETSI's asn1 description
• Scale

Example:

...
"latitude_value": {
      "type": "integer",
      "description": "Latitude of the geographical point.",
      "unit": "degree",
      "scale": 0.0000001,
      "default": 900000001,
      "minimum": -900000000,
      "maximum": 900000001
    },
...

---

In CDD:

/**
 * This DE represents the absolute geographical latitude in a WGS84 coordinate system, providing a range of 90 degrees in north or
 * in south hemisphere.
 * The specific WGS84 coordinate system is specified by the corresponding standards applying this DE.
 *
 * The value shall be set to:
 * - `n` (`n >= -900 000 000` and `n < 0`) x 10^-7 degree, i.e. negative values for latitudes south of the Equator,
 * - `0` is used for the latitude of the equator,
 * - `n` (`n > 0` and `n < 900 000 001`) x 10^-7 degree, i.e. positive values for latitudes north of the Equator,
 * - `900 000 001` when the information is unavailable.
 *
 * @unit: 10^-7 degree
 * @category: GeoReference information
 * @revision: Editorial update in V2.1.1
 */
Latitude ::= INTEGER {
    unavailable(900000001)
} (-900000000..900000001)