Add support for mlflow run run_name

What does this MR do and why?

Adds support for the run_name parameter during creation of MLFlow runs (https://www.mlflow.org/docs/latest/rest-api.html#create-run).

Database Migration

Up

❯ bundle exec rails db:migrate RAILS_ENV=development
main: == 20221219103007 AddNameToMlCandidates: migrating ============================
main: -- add_column(:ml_candidates, :name, :text)
main:    -> 0.0031s
main: == 20221219103007 AddNameToMlCandidates: migrated (0.0113s) ===================

main: == 20221219112528 AddTextLimitToNameOnMlCandidates: migrating =================
main: -- transaction_open?()
main:    -> 0.0000s
main: -- current_schema()
main:    -> 0.0005s
main: -- transaction_open?()
main:    -> 0.0000s
main: -- execute("ALTER TABLE ml_candidates\nADD CONSTRAINT check_25e6c65051\nCHECK ( char_length(name) <= 255 )\nNOT VALID;\n")
main:    -> 0.0019s
main: -- current_schema()
main:    -> 0.0003s
main: -- execute("SET statement_timeout TO 0")
main:    -> 0.0004s
main: -- execute("ALTER TABLE ml_candidates VALIDATE CONSTRAINT check_25e6c65051;")
main:    -> 0.0009s
main: -- execute("RESET statement_timeout")
main:    -> 0.0008s
main: == 20221219112528 AddTextLimitToNameOnMlCandidates: migrated (0.2573s) ========

ci: == 20221219103007 AddNameToMlCandidates: migrating ============================
ci: -- add_column(:ml_candidates, :name, :text)
ci:    -> 0.0019s
ci: == 20221219103007 AddNameToMlCandidates: migrated (0.0189s) ===================

ci: == 20221219112528 AddTextLimitToNameOnMlCandidates: migrating =================
ci: -- transaction_open?()
ci:    -> 0.0000s
ci: -- current_schema()
ci:    -> 0.0004s
ci: -- transaction_open?()
ci:    -> 0.0000s
ci: -- execute("ALTER TABLE ml_candidates\nADD CONSTRAINT check_25e6c65051\nCHECK ( char_length(name) <= 255 )\nNOT VALID;\n")
ci:    -> 0.0015s
ci: -- current_schema()
ci:    -> 0.0004s
ci: -- execute("SET statement_timeout TO 0")
ci:    -> 0.0004s
ci: -- execute("ALTER TABLE ml_candidates VALIDATE CONSTRAINT check_25e6c65051;")
ci:    -> 0.0007s
ci: -- execute("RESET statement_timeout")
ci:    -> 0.0004s
ci: == 20221219112528 AddTextLimitToNameOnMlCandidates: migrated (0.0214s) ========

Down

❯ bundle exec rails db:migrate:down:main RAILS_ENV=development VERSION=20221219112528 && bundle exec rails db:migrate:down:ci RAILS_ENV=development VERSION=20221219112528
main: == 20221219112528 AddTextLimitToNameOnMlCandidates: reverting =================
main: -- transaction_open?()
main:    -> 0.0000s
main: -- transaction_open?()
main:    -> 0.0000s
main: -- execute("            ALTER TABLE ml_candidates\n            DROP CONSTRAINT IF EXISTS check_25e6c65051\n")
main:    -> 0.0016s
main: == 20221219112528 AddTextLimitToNameOnMlCandidates: reverted (0.0260s) ========

ci: == 20221219112528 AddTextLimitToNameOnMlCandidates: reverting =================
ci: -- transaction_open?()
ci:    -> 0.0001s
ci: -- transaction_open?()
ci:    -> 0.0000s
ci: -- execute("            ALTER TABLE ml_candidates\n            DROP CONSTRAINT IF EXISTS check_25e6c65051\n")
ci:    -> 0.0033s
ci: == 20221219112528 AddTextLimitToNameOnMlCandidates: reverted (0.0481s) ========

❯ bundle exec rails db:migrate:down:main RAILS_ENV=development VERSION=20221219103007 && bundle exec rails db:migrate:down:ci RAILS_ENV=development VERSION=20221219103007
main: == 20221219103007 AddNameToMlCandidates: reverting ============================
main: -- remove_column(:ml_candidates, :name, :text)
main:    -> 0.0040s
main: == 20221219103007 AddNameToMlCandidates: reverted (0.0108s) ===================

ci: == 20221219103007 AddNameToMlCandidates: reverting ============================
ci: -- remove_column(:ml_candidates, :name, :text)
ci:    -> 0.0058s
ci: == 20221219103007 AddNameToMlCandidates: reverted (0.0289s) ===================

Reproducing

1. Create a Project and a project access token, with api level:

   export PROJECT_ID=<Your Project Id>
   export GITLAB_PAT=<your api token>

2. Create an Experiment:

   curl -X POST -H "Authorization: Bearer $GITLAB_PAT" -d name=my_cool_experiment http://gdk.test:3000/api/v4/projects/$PROJECT_ID/ml/mflow/api/2.0/mlflow/experiments/create

3. This should 404 as the FF is off

4. Enable the Feature flag

   echo "Feature.enable(:ml_experiment_tracking)" | bundle exec rails c

5. Create Again, now it should output {"experiment_id"="1"}

   curl -X POST -H "Authorization: Bearer $GITLAB_PAT" -d name=my_cool_experiment http://gdk.test:3000/api/v4/projects/$PROJECT_ID/ml/mlflow/api/2.0/mlflow/experiments/create

   {"experiment_id":"1"} 

6. Create a Run

   curl -X POST -H "Authorization: Bearer $GITLAB_PAT" -d experiment_id=1 -d run_name="My Cool Run" "http://gdk.test:3000/api/v4/projects/$PROJECT_ID/ml/mlflow/api/2.0/mlflow/runs/create"

7. Note that the run return now has a run_name property returned

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.