Add support for model management

Model management is an important aspect of the machine learning lifecycle, and currently, the Arena CLI tool lacks support for model management features. [MLflow](https://github.com/mlflow/mlflow) is an open source platform dedicated to managing machine learning lifecycles, with the MLflow Model Registry component acting as a centralized model store, providing a set of APIs, and a UI, to collaboratively manage the full lifecycle of an MLflow Model. It would be meaningful for Arena to support some form of model registry, and MLflow stands out as a good choice. Below are some examples:

Create a registered model or model version

# Create a registered model
$ arena model create \
    --name my-model \
    --tags key1,key2=value2 \
    --description "This is some description about my-model"
registered model "my-model" created

# Create a model version
$ arena model create \
    --name my-model \
    --version auto \
    --tags key1,key2=value2 \
    --description "This is some description about my-model v1" \
    --source pvc://my-pvc/models/my-model/1
model version 1 for "my-model" created

Get a registered model or model version

# Get a registered model
$ arena model get \
    --name my-model
Name:                my-model
LatestVersion        3
CreationTime:        2024-03-27T19:59:14+08:00
LastUpdatedTime:     2024-03-27T20:01:35+08:00
Description:
  This is some description about my-model
Tags:
  createdBy: arena
  key1: 
  key2: value2
Versions:
  Version    Source
  ---        ---
  1          pvc://my-pvc/models/my-model/1
  2          pvc://my-pvc/models/my-model/2
  3          pvc://my-pvc/models/my-model/3

# Get a model version
$ arena model get \
    --name my-model \
    --version 1
Name:                my-model
Version:             1
CreationTime:        2024-03-27T20:01:31+08:00
LastUpdatedTime:     2024-03-27T20:01:31+08:00
Source:              pvc://my-pvc/models/my-model/1
Description:
  This is some description about my-model v1
Tags:
  createdBy: arena
  key1: 
  key2: value2

List all registered models

$ arena model list    
NAME                 LATEST_VERSION       LAST_UPDATED_TIME                                                               
model-1              1                    2024-03-27 20:20:59                                                             
model-2              2                    2024-03-27 20:21:04                                                             
my-model             3                    2024-03-27 20:20:45

Update a registered model or model version

# Update a registered model
$ arena model update \
    --name my-model \
    --description "This is some updated description" \
    --tags key1,key2=value2
registered model "my-model" updated

# Update a model version
$ arena model update \
    --name my-model \
    --version 1 \
    --description "This is some updated description" \
    --tags key1,key2=value2
model version "my-model/1" updated

# Update a model version(delete tags)
$ arena model update \
    --name my-model \
    --version 1 \
    --tags key1-,key2=value2-
model version "my-model/1" updated

Delete a registered model or model version

# Delete a registered model with confirmation
$ arena model delete \
  --name my-model
Delete a registered model will cascade delete all its model versions. Are you sure you want to perform this operation? (yes/no)
yes
registered model "my-model" deleted

# Delete a registered model forcely
$ arena model delete \
  --name my-model \
  --force
registered model "my-model" deleted

# Delete a model version with confirmation
$ arena model delete \
    --name my-model \
    --version 1
Are you sure you want to perform this operation? (yes/no)
yes
model version "my-model/1" deleted

# Delete a model version forcely
$ arena model delete \
    --name my-model \
    --version 1 \
    --force
model version "my-model/1" deleted

kubeflow / arena

Add support for model management #1059