update sample

Author: cesar-sosa-hol

example/android/app/debug.keystore

@@ -0,0 +1,22 @@
+# examples/ruby/sample.rb
+# Minimal Ruby sample so CodeQL can run Ruby analysis
+
+class PaymentExample
+  def initialize(amount_cents)
+    @amount_cents = amount_cents
+  end
+
+  def valid?
+    @amount_cents.to_i > 0
+  end
+
+  def process
+    raise "Invalid amount" unless valid?
+    # fake processing
+    puts "Processing #{@amount_cents} cents..."
+  end
+end
+
+if __FILE__ == $0
+  PaymentExample.new(100).process
+end