Improve the console log after downloading the plugin

### What feature do you want to see added?

Current Scenario During installing particular Plugin

`sudo java -jar jenkins-plugin-manager-2.12.13.jar --war /opt/homebrew/opt/jenkins/libexec/jenkins.war --plugin-download-directory /Users/aaayush/.jenkins/plugins --plugins delivery-pipeline-plugin blueocean `

**Console Output:**
Done

Excepted Behaviour: The Console output 'done' doesn't make proper sense to the logs. We need proper output logs that is the Plugin installed successfully

**Command:**

`sudo java -jar jenkins-plugin-manager-2.12.13.jar --war /opt/homebrew/opt/jenkins/libexec/jenkins.war --plugin-download-directory /Users/aaayush/.jenkins/plugins --plugins delivery-pipeline-plugin blueocean `

**Console Output:**
`Plugin installed successfully `

### Upstream changes

_No response_