Metadata Templates Selection UI

[joshsadam]

What does this PR do and why?

Describe in detail what your merge request does and why.

1. Updated the ability to display none or all metadata fields via a new select input
2. Added the ability to select existing metadata templates via the same select dropdown

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other pull requests.

How to set up and validate locally

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

1. In the user interface, login as [email protected] and create a new project
2. Create a couple new samples in the project and add some metadata fields (e.g. a, b, c)
3. Go into the rails console;
4. Get the user: user = User.find_by(email: "[email protected]")
5. Get the namespace for the project you created: namespace = Project.last.namespace
6. Create a new metadata template inside the project namespace: template = MetadataTemplates::CreateService.new(user, namespace, {name: "template1", fields: ['b', 'c']}).execute
7. Back inside the user interface, you should be able to go to the samples page for the project you created, and from the select above the table select either: all fields, no fields, or a template.

PR 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 PR acceptance checklist for this PR.

[github-actions]

Code Metrics Report

Coverage	Test Execution Time
92.7%	10m58s

Code coverage of files in pull request scope (95.3%)

Files	Coverage
app/components/activities/project_activity_component.rb	100.0%
app/components/metadata_templates_dropdown_component.html.erb	100.0%
app/components/metadata_templates_dropdown_component.rb	100.0%
app/controllers/concerns/metadata.rb	91.6%
app/controllers/groups/samples_controller.rb	98.3%
app/controllers/projects/samples_controller.rb	100.0%
app/controllers/workflow_executions/submissions_controller.rb	100.0%
app/models/namespace.rb	95.8%
app/models/project.rb	100.0%
app/models/sample/query.rb	83.3%
app/views/groups/samples/_table_filter.html.erb	100.0%
app/views/projects/samples/_table_filter.html.erb	100.0%

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Reported by octocov