AsciiBannerGeneratorService.registerFont(fontName: string,fontDefinition: string,): void
Register a new font.
The recommended way to load the font definition is to convert the font definition to a JSON string
(replacing newlines with \n) and placing in a simple JSON file: { "font": "<figlet font definition>" }.
This can then be imported as follows:
`import { font as myFont } from "./myfont.json" with { type: "json" };
the definition for the syntax conforming to the FIGfont format.