Notifications for build executions

### Description

When running tests (i.e. JUnit test executions), NetBeans generates a notification when the test is finished, showing a notification bubble from the status bar. It would be useful to have the option of a similar notification for (Maven) build executions, showing if the build succeeded or failed.

### Use case/motivation

The NetBeans window system can be used such that the Output window is only visible on demand. When a build of one module is running, I often continue working on other stuff in a different module, and I might be waiting for the build to finish to run some other operation or test against the newly built module, if it was build successfully. In that context, a notification would be useful to get a more visible indication of when the build execution has finished, and more importantly, to also quickly see if the build was successful or not, without having to pull up the Output window.

### Related issues

_No response_

### Are you willing to submit a pull request?

No

The issue names no files, tests, or entry points. Start by locating Maven build execution completion handling and the existing JUnit completion notification described in the issue. Done means an option can notify users when a Maven build finishes and clearly show whether it succeeded or failed.

Written by the indexing model from the issue text.