Add tasks to print out ENV variables and start the replication process

lib/tasks/litestream_tasks.rake

@@ -0,0 +1,21 @@
+namespace :litestream do
+  desc "Print the ENV variables needed for the Litestream config file"
+  task env: :environment do
+    if Litestream.configuration.nil?
+      warn "You have not configured the Litestream gem with any values to generate ENV variables"
+      next
+    end
+
+    puts "LITESTREAM_DATABASE_PATH=#{Litestream.configuration.database_path}"
+    puts "LITESTREAM_REPLICA_URL=#{Litestream.configuration.replica_url}"
+    puts "LITESTREAM_REPLICA_KEY_ID=#{Litestream.configuration.replica_key_id}"
+    puts "LITESTREAM_REPLICA_ACCESS_KEY=#{Litestream.configuration.replica_access_key}"
+
+    true
+  end
+
+  desc ""
+  task replicate: :environment do
+    Litestream::Commands.replicate
+  end
+end