Anitya integration

Project	https://release-monitoring.org/project/12318
Homepage	https://store.steampowered.com
Backend	folder
Latest versions	1.0.0.82
All versions found	1.0.0.82, 1.0.0.81, 1.0.0.79, 1.0.0.78, 1.0.0.76, 1.0.0.75, 1.0.0.74, 1.0.0.73, 1.0.0.72, 1.0.0.71, 1.0.0.70, 1.0.0.69, 1.0.0.68, 1.0.0.67, 1.0.0.66, 1.0.0.64, 1.0.0.63, 1.0.0.62, 1.0.0.61, 1.0.0.59, 1.0.0.56, 1.0.0.55, 1.0.0.54, 1.0.0.53, 1.0.0.52, 1.0.0.51, 1.0.0.50, 1.0.0.49, 1.0.0.48, 1.0.0.47, 1.0.0.45, 1.0.0.44, 1.0.0.43, 1.0.0.42, 1.0.0.41, 1.0.0.40, 1.0.0.39, 1.0.0.38, 1.0.0.37, 1.0.0.36, 1.0.0.35, 1.0.0.34, 1.0.0.33, 1.0.0.32, 1.0.0.31, 1.0.0.30, 1.0.0.29, 1.0.0.28, 1.0.0.27, 1.0.0.26, 1.0.0.25, 1.0.0.24