Add in Guides documentation to the Hugo documentation

[JerBouma]

This PR will add in the Getting Started and Introduction to Stocks guides to the Hugo docs. We will be expanding all of this greatly over time. See some examples:

Before merge, the tables and lists still need to be fixed, they currently default to black.

[JerBouma]

@jose-donato Could you check if my adjustments to the CSS are in line what you would have expected?

In both public/main-5e7fc0c942.min.css and static/main-5e7fc0c942.min.css I added in the tables and lists HTML (tr and li):

@media (prefers-color-scheme: light) {
  h1,
  h2,
  h3,
  p,
  tr,
  li
   {
    color: white;
  }

Apparently, this also fixed this little section over here:

The icons used to be hidden, see:

[jose-donato]

Looks nice, good job.

Fixed the black svg on light mode