Strip ANSI colours from ServerGUI

By: md_5 <git@md-5.net>

paper-server/nms-patches/ServerGUI.patch

@@ -0,0 +1,19 @@
+--- a/net/minecraft/server/ServerGUI.java
++++ b/net/minecraft/server/ServerGUI.java
+@@ -159,6 +159,7 @@
+         this.e.forEach(Runnable::run);
+     }
+ 
++    private static final java.util.regex.Pattern ANSI = java.util.regex.Pattern.compile("\\x1B\\[([0-9]{1,2}(;[0-9]{1,2})*)?[m|K]"); // CraftBukkit
+     public void a(JTextArea jtextarea, JScrollPane jscrollpane, String s) {
+         if (!SwingUtilities.isEventDispatchThread()) {
+             SwingUtilities.invokeLater(() -> {
+@@ -174,7 +175,7 @@
+             }
+ 
+             try {
+-                document.insertString(document.getLength(), s, (AttributeSet) null);
++                document.insertString(document.getLength(), ANSI.matcher(s).replaceAll(""), (AttributeSet) null); // CraftBukkit
+             } catch (BadLocationException badlocationexception) {
+                 ;
+             }