IPVGO: Add support for highlighting nodes and adding small text

[ficocelliguy]

Adds new API methods to go.analytics to allow for adding colored indicators and/or text to nodes by player scripts.

Can be tested at https://ficocelliguy.github.io/bitburner-src/

My testing script that makes it rave mode:

/** @param {NS} ns */
export async function main(ns) {

  const boardSize = ns.go.getBoardState().length;

  while(true) {
    await ns.sleep();
    const x = (Math.random() * boardSize) | 0;
    const y = (Math.random() * boardSize) | 0;
    let color = "#";
    for (let j = 0; j < 6; j++) {
      color += [0,1,2,3,4,5,6,7,8,9,"a","b","c","d","e","f"][Math.random() * 16 | 0];
    }
    ns.go.analysis.highlightPoint(x, y, color, color);
  }

}

[paulcdejean]

I almost want to say skip the text arg, and just have it support colors tbh. But maybe that's just me being mean.