Release the java runfiles library as a maven coordinate

When working on a project that doesn't build with bazel but needs to use the runfiles library (for example, when porting a project from gradle to bazel) there's no easy way to access the java runfiles library. The Python world exports theirs as a wheel.

It would be helpful to expose the java runfiles library as a maven coordinate.

Bazel projects can either not use the coordinate or use a maven.override to point to the Bazel-provided version.

首先找到 Java runfiles 函式庫和儲存庫中現有的 release 設定。確定如何將該函式庫發佈為 Maven coordinate，同時保留 Bazel 提供的版本路徑，然後驗證不使用 Bazel 的 consumer 能夠解析並使用已發佈的 artifact。