This change removes the event tracer from the repository as we migrate
to the industry standard OpenTelemetry.

This change uses the Java Platform functionality from Gradle to enable
shared dependency constraints across modules.

This change updates the Gradle configuration to utilize version
constraints to force the same dependency version across modules.

This change moves the version of the dependencies from buildSrc to
gradle.properties to prevent recompilation when changing dependency
versions.

This change extracts the configuration for test from the Kotlin library
conventions.

This change fixes an issue where an EventStream was not properly closed
when the user asked so.

This change adds a new library for event tracing, in order to use a
consistent approach for recording and processing event (streams).