Improve Alpha Lyrae images

[edd]

There are three example images used on the Alpha Lyrae readme page (https://github.com/vegaprotocol/brand/tree/main/4-Alpha-Lyrae), and one in the inner readme. These were added in vegaprotocol/brand#3. They were made quickly, and aren't quite as crisp as they should be.

The images to replace

• 'Alpha Lyrae' header, set in Alpha Lyrae
• The lorem ipsum image, demonstrating that by adding words the subsequent ligatures change
• 'Alpha Lyrae' 4 times, demonstrating some different versions of characters that will appear depending on where the words appear in a paragraph.

Other than the headers, the text content is open. Lorem ipsum is boring, but serves the purpose. Black and white text is boring, but again - serves the purpose. Feel free to go crazier.