[FEATURE REQUEST] Maven Package Manager Support

### Please confirm these before moving forward.

- [x] I have searched for my feature proposal and have not found a work-in-progress/duplicate/resolved/discarded issue.
- [x] This proposal is a completely new feature. If you want to suggest an improvement or an enhancement, please use [this template](https://github.com/marticliment/WingetUI/issues/new?assignees=marticliment&labels=enhancement&projects=&template=enhancement-improvement.yml&title=%5BENHANCEMENT%5D+%28Enter+your+description+here%29).

### Describe the new feature

[`Maven`](https://maven.apache.org) is the most commonly used package manager for Java libraries, just like `vcpkg` for C++ and `cargo` for Rust. The last two are already supported in `UniGetUI`. Was `maven` already considered or can it be implemented maybe similar to Python `pip` showing which library has a newer version available? The difference between `pip` and `maven` is that you specify which version of a library you want to use in the `pom.xml` file on a project basis and the used libraries aren't automatically updated to the latest version, unless the `pom.xml` file specifies it accordinly with e.g. `LATEST` as the version etc.
`Maven` will also automatically update dependencies when using `LATEST` as the version when building a project which however is considered bad practice since always using latest library versions can cause unintended side-effects from a library being updated without the developer's knowledge and somehow suddenly behaving differently.

### Describe how this new feature could help users

It could help automate downloading the latest package versions in the `.m2` folder/repository. `UniGetUI` could show users of `maven` packages if there's an update available in an automated way for each available library package inside the `.m2` folder. After seeing which packages have updates, a developer can then put the new version numbers into the `pom.xml` file of Java projects (manually) to upgrade them respectively for each project. [`Maven` has a command to check for updated versions](https://www.mojohaus.org/versions/versions-maven-plugin/examples/display-dependency-updates.html) but it seems to only be usable on a per project basis, not globally. Also, this command can be slow if there are many transitive dependencies, e.g. when using bigger frameworks.