R1:6bd8ee861ca7

Use PEAR Text_Figlet to render figlet fonts

Summary:
Ref T7785. Makes Figlet available without installing the `figlet` package.

The PEAR Text_Figlet code is really sketchy and includes this API, which is quite marvelous:

```
function loadFont($filename, $loadgerman = true)
```

At some point, this should probably be rewritten into a modern style, but it's not trivial since the figlet file format and rendering engine are somewhat complicated. I made some adjustments:

- Broke the dependency on the…