sonarcloud

See #751, release log:

• cb87c4b by @yegor256: #751 skip invoker for deploy
• 31cc43d by @yegor256: #751 qulice off
• 567d7d3 by @yegor256: #751 java8 rultor
• d42c226 by @yegor256: #751 sonar
• 96d7009 by @yegor256: badge

Released by Rultor 1.66.3, see build log