Added example implementation of Process manager

Updated ARM64 image to target DockerHub

Added links in READMEs

Added GitHub action for distributed processes samples

Added README for uniqueness samples

Added paths to GitHub Actions to trigger only when changes were made …

…to specific sample folder

Added GitHub action for events versioning

Updated gradle version to 7.4 in Stream Metadata samples

Updated dependencies

Added link to "Practical introduction to Event Sourcing with Spring Boot and EventStoreDB" webinar

Added link to "Let's build the worst Event Sourcing system!" talk