Adding experiment metadata table to the -/ml/experiments/:id

What does this MR do and why?

Adding display of ML experiment metadata below the table in -/ml/experiments/:id As described in #415792 (closed)

MR acceptance checklist

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Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Run default gdk
2. Setup a project and seed it with mlflow (example: https://gitlab.com/gitlab-org/incubation-engineering/mlops/model_experiment_example ). To add metadata create experiment manually and add tags (ref https://mlflow.org/docs/latest/getting-started/logging-first-model/step3-create-experiment.html)
3. Go to the newly created experiment in the repository of your choosing

Seeding data using rails console

p = Project.find_by(id: 1)
exp = Ml::Experiment.create!(project: p, name: "Awesome experiment")
Ml::ExperimentMetadata.create!(experiment: exp, name: 'metadata_1', value: 'a')
Ml::ExperimentMetadata.create!(experiment: exp, name: 'metadata_2', value: '123456789')

Related to #415792 (closed)