Add Vertx SQL Client as a brother of R2dbc/Jdbc

[hantsy]

Vertx SQL Client is another reactive client that is used to connect to the RDBMS.

• Hibernate Reactive is based on Vertx SQL Client, and Hibernate Reactive support is included in Micronaut and Quarkus
• Quarkus also Vertx SQL Client or variants implementation of Mutiny.
• Vertx supports Vertx SQL Client and varaints of RxJava2/3, SmallRye Mutiny.
• Micronaut also supports Vertx SQL Client and its variants.

BTW, Vertx includes a collection of its own Async API by default.