feat(dashboard): Add VERSION file referenced from GitHub Actions (#84)

As part of migrating relevant GHAs from `kubeflow/kubeflow`, a `releasing/version/VERSION` file is referenced as a trigger.

To facilitate the migration, this PR adds the `VERSION` file in its expected location.  File/directory structure was copied shamelessly/deliberately from:
- https://github.com/kubeflow/kubeflow/blob/master/releasing/version/VERSION

Note this commit ONLY adds the file referenced in the GHAs.  Other files contained in `releasing` can be addressed in a subsequent PR.

related: #74

Signed-off-by: Andy Stoneberg <[email protected]>

Author: andyatmiami

releasing/version/VERSION

@@ -0,0 +1 @@
+latest