Ports: Add nnn port

This ports the nnn (n³ / Nnn's Not Noice) file manager.

Ports/nnn/patches/0003-Disable-broken-features.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Rene Hickersberger <r@renehsz.com>
+Date: Sat, 24 Jun 2023 01:25:27 +0200
+Subject: [PATCH] Disable broken features
+
+Mouse support is currently broken and X11 does not make sense on Serenity.
+---
+ Makefile | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 955965aad67967a5acd73822647b2ce11d4a819e..6e1f0476c761a8f7a8d53e2c4f0fe714a20198a6 100644
+--- a/Makefile
++++ b/Makefile
+@@ -15,7 +15,7 @@ O_DEBUG := 0  # debug binary
+ O_NORL := 0  # no readline support
+ O_PCRE := 0  # link with PCRE library
+ O_NOLC := 0  # no locale support
+-O_NOMOUSE := 0  # no mouse support
++O_NOMOUSE := 1  # no mouse support
+ O_NOBATCH := 0  # no built-in batch renamer
+ O_NOFIFO := 0  # no FIFO previewer support
+ O_CTX8 := 0  # enable 8 contexts
+@@ -26,7 +26,7 @@ O_QSORT := 0  # use Alexey Tourbin's QSORT implementation
+ O_BENCH := 0  # benchmark mode (stops at first user input)
+ O_NOSSN := 0  # disable session support
+ O_NOUG := 0  # disable user, group name in status bar
+-O_NOX11 := 0  # disable X11 integration
++O_NOX11 := 1  # disable X11 integration
+ O_MATCHFLTR := 0  # allow filters without matches
+ O_NOSORT := 0  # disable sorting entries on dir load
+