add support for run name for mlflow (#10)

This PR implements a change to set the MLFlow run name in the `uv.start_run` method. If the user does not set this explicitly, then this value is picked up from the environment variable `MLFLOW_RUN_NAME` in a manner similar to the way that the MLFlow experiment name is set in the same method.

This PR also adds support for setting the artifact_root for an mlflow experiment in the `uv.start_run` method.

Additionally, this adds tags for CAIP jobs to list the job id and a link to the ai-platform console page for the job

Merge pull request #5 from google/sritchie/mlflow

update makefile

Change-Id: Ic9fa97124fc24f7eed9aebde38b5a97026e16ddc

fix memory reporter issue with string conversion in keys

Change-Id: If365e24781c32ab13102c99a3b5f2aa64ab78b49

get it going

Change-Id: I526845e653193083802cd9c377ea3fc2f4f64a64

fix makefile

Change-Id: I43ef8c29c8f997682460fa7655a8b888dd6779a6

add suffix code

Change-Id: I0cfdc9b9673e74e258425e76413e2ecc967175aa

add versions

Change-Id: I65a25bc95b036a704a98002e1546b4bdca382ee7