[Feature] Provide an installation via OLM

Are there plans to offer to install the barman-cloud operator via OLM like the "cloudnative-pg" operator?

https://cloudnative-pg.io/documentation/current/installation_upgrade/

Currently the official way to install the operator is by running the`"manifest.yaml"`file.
One problem with the manifest is the`namespaces`that are hard-coded to`"cnpg-system"`, assuming that "cloudnative-pg" instances run in that`namespace`.
Another problem is that it is not easy for upgrading. btw is there an official safe way/method to upgrade the operator?

Having the operator packaged as an OLM in OperatoHub.io would simplify the install and upgrades, and also be aligned with the cloudnative-pg operator

Thanks

Start by reviewing the current manifest.yaml installation method and the linked CloudNativePG installation and upgrade documentation. Determine the requirements for packaging this operator with OLM and publishing it to OperatorHub, including namespace handling and a safe upgrade path; done means the OLM installation and upgrades are supported and documented.

Written by the indexing model from the issue text.