[DRAFT] feat: getGeoDiff

[DoneDeal0]

🌎 NEW FEATURE: getGeoDiff

import { getGeoDiff } from "@donedeal0/superdiff";

Compares two coordinates and returns the distance between them.

FORMAT

Input

previousCoordinates: GeoCoordinates | null | undefined;
coordinates: GeoCoordinates | null | undefined;
options?: {
   unit:? "centimeters" | "feet" | "inches" |"kilometers" | "meters" | "miles" | "scandinavian miles" | "millimeters" | "yards".
   accuracy?: "normal" | "high", // "normal" by default
   maxDecimals?: number;
   locale?: Intl.Locale | string // undefined by default

* @param {GeoCoordinates | null | undefined} previousCoordinates - The original coordinates.
 * @param {GeoCoordinates | null | undefined} coordinates - The current or target coordinates.
 * @param {TextDiffOptions} options - Options to refine your output.
  - `unit`: centimeters, feet, inches, kilometers, meters, miles, scandinavian miles, millimeters or yards.
  - `accuracy`: 
    - `normal` (default): fastest mode, with a small error margin, based on Haversine formula.
    - `high`: slower but exact distance. Based on vincenty formula.
  - `maxDecimals`: maximal decimals for the distance. Defaults to 2.
  - `locale`: the locale of your distance. Enables a locale‑aware distance label.

Output

export type GeoDiff = {
    type: "geo";
    status: GeoStatus;
    diff: {
        coordinates: GeoCoordinates | null;
        previousCoordinates: GeoCoordinates | null;
        distance: number;
        unit: GeoUnit,
        label: string,
        direction: GeoDirection;
    };
};