Add ability to filter tags by name

Context

This is required to support &10208 (closed) and is related to the new List Repository Tags API endpoint.

Problem

Today, a list of all the tags is returned by the List Repository Tags endpoint. The GitLab UI currently supports filtering tags by name.

This is the counterpart implementation of the filtering in Ruby.

if filters[:name]
  result = tags.filter do |tag|
    tag.name.include?(filters[:name])
  end
end

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