Add mtr package (#3883)

Co-authored-by: Thomas Gambier <thomas.gambier@nexedi.com>

packages/mtr.rb

+require 'package'
+
+class Mtr < Package
+  description "mtr combines the functionality of the 'traceroute' and 'ping' programs in a single network diagnostic tool."
+  homepage 'https://www.bitwizard.nl/mtr/'
+  version '0.93'
+  source_url 'ftp://ftp.bitwizard.nl/mtr/mtr-0.93.tar.gz'
+  source_sha256 '229c673d637bd7dbb96471623785a47e85da0b1944978200c949994c1e6af10d'
+
+  binary_url ({
+    aarch64: '',
+     armv7l: '',
+     x86_64: '',
+       i686: ''
+  })
+  binary_sha256 ({
+    aarch64: '',
+     armv7l: '',
+     x86_64: '',
+       i686: '',
+  })
+
+  depends_on 'ncurses'
+
+  def self.build
+    system "./configure", "--prefix=#{CREW_PREFIX}", "--libdir=#{CREW_LIB_PREFIX}", "--without-gtk",
+        "LDFLAGS=-Wl,-rpath,#{CREW_LIB_PREFIX}"
+    system "make"
+  end
+
+  def self.install
+    system "sudo", "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end