Rename DB to Storage

Author: noteflakes

cmd/new/template/app/_lib/database.rb

@@ -0,0 +1,13 @@
+export self
+
+def connection_pool
+  @connection_pool ||= Storage::ConnectionPool.new(@machine, @env[:config][:storage][:path], 4)
+end
+
+def schema
+  Storage::Schema.new(module_loader: @module_loader, schema_root: '_schema')
+end
+
+def migrate!
+  schema.apply(connection_pool)
+end