*Motivation*

Bump the development version to 2.6.0-SNAPSHOT

* Removed managed-ledger-shaded artifact

* Fixed dep artifact renaming error

* adding a module that shades managed-ledger

* removing commented out lines

Signed-off-by: NSijie Guo <sijie@apache.org>

Remove pulsar-common dependency from pulsar-io-core module and cleanup pulsar-common dependency references (#2020)

*Motivation*

With pulsar-common shading in pulsar-client, conflicts observed when using pulsar-client with connectors. Because pulsar-client shades its dependencies,
while pulsar-io implementations pull in pulsar-common which depends on non-shaded dependencies.

*Changes*

- Move KeyValue class to pulsar-io-core, since all pulsar-io is using it.
- Remove pulsar-common from all pulsar-io implementation modules
- Cleanup all direct usage of pulsar-common when pulsar-client-original is in the place.

* Fix authentication logic in WebSocketWebResource

* Try acquiring clientId even when authentication is disabled

* Updates headers with ASF source files header

* change license to additional files