fix: include cross-JOIN ON referenced columns in count subquery for MySQL, thx to @youdaoSu #878;
fix: fail fast on invalid fake-delete config, thx to @henriquejsza #875;
fix: reject unresolved POST and PUT references, thx to @henriquejsza #876;
upgrade maven compiler plugin 3.16.0, maven source plugin 3.4.0, self 8.3.2;

ci: create maven.yml
doc: add @henriquejsza, @youdaoSu to CONTRIBUTING.md;
doc: 10+ plugins: router, column, milvus, mongodb, influxdb, cassandra, jackson, fastjson2, gson, query-spring-boot-starter, dynamic-datasource