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 PEAR core.
- Prevented it from doing any wrong HTML escaping.
- Looked through it for any glaring security or correctness problems.
This code isn't very pretty or modern, but as far as I can tell it's safe and does render Figlet fonts in a reasonable way.
Test Plan: {F803268}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9408, T7785
Differential Revision: https://secure.phabricator.com/D14102
6bd8ee861c