Function connect

connect(graph, options): Graph
Makes a connection between options.a and one or more nodes in options.b. Same as connectWithEdges but only the Graph is returned.
```
let g = graph(); // Create an empty graph
// Make a connection between `red` and `orange`
g = connect(g, { a: `red`, b: `orange` });

// Make a connection between `red` and `orange as well as `red` and `yellow`.
g = connect(g, { a: `red`, b: [`orange`, `yellow`] })
```
Parameters
- graph: Readonly<{
      edges: readonly Readonly<{
          a: string;
          b: string;
          weight?: number;
      }>[];
      vertices: IMapImmutable<string, Readonly<{
          id: string;
      }>>;
  }>
  Initial graph
- options: Readonly<{
      a: string;
      b: string | string[];
      weight?: number;
  }>
  Options
Returns Graph