Ports: Add 'figlet' port.

This was the first piece of 3rd party software I got running on Serenity,
so having it as a port feels like some kind of milestone. I think :^)

Ports/figlet/figlet-no-toilet-fonts.patch

@@ -0,0 +1,11 @@
+--- figlet-2.2.5/Makefile	2012-06-01 14:51:09.000000000 +0200
++++ figlet-2.2.5-patched/Makefile	2019-06-09 12:15:01.817177188 +0200
+@@ -26,7 +26,7 @@
+ 
+ # Feature flags:
+ #   define TLF_FONTS to use TOIlet TLF fonts
+-XCFLAGS	= -DTLF_FONTS
++#XCFLAGS	= -DTLF_FONTS
+ 
+ # Where to install files
+ prefix	= /usr/local

Ports/figlet/figlet.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+PORT_DIR=figlet
+INSTALLOPTS="DESTDIR=$SERENITY_ROOT/Root/"
+
+fetch() {
+    run_fetch_web "http://ftp.figlet.org/pub/figlet/program/unix/figlet-2.2.5.tar.gz"
+
+    run_patch figlet-no-toilet-fonts.patch -p1
+}
+
+configure() {
+    echo "No configure script"
+}
+
+build() {
+    run_make CC=i686-pc-serenity-gcc LD=i686-pc-serenity-gcc
+}
+
+install() {
+    run_make_install
+}
+
+. ../.port_include.sh