
This commit adds auto-configuration support for Spring Data R2DBC. If a `ConnectionFactory` and Spring Data are available, scanning of reactive repositories is enabled. This commit also adds a starter to bring R2DBC and the necessary Spring Data libraries. See gh-19988 Co-authored-by: Mark Paluch <mpaluch@pivotal.io> Co-authored-by: Oliver Drotbohm <odrotbohm@pivotal.io>