Create plugin for a tenant, create plugin if it has never been created before and install it to the tenant, return the plugin and the installation if the plugin has been created before, return the plugin which has been created before.

Delete plugin for a tenant, delete the plugin if it has never been created before and uninstall it from the tenant, return the plugin and the installation if the plugin has been created before, return the plugin which has been created before.

Upgrade plugin for a tenant, upgrade the plugin if it has been created before and uninstall the original plugin and install the new plugin, but keep the original installation information like endpoint_setups, etc.