Refactor members pagination from HAML to Vue

📖 What does this MR do?

Related to #327648 (closed) part of &5616

Currently the group/project member pages are composed of 4 separate Vue applications that use Bootstrap tabs. We would like to move these into one Vue app so we can use GlTabs and move towards deprecating Bootstrap tabs. As a step towards doing this we need to refactor the pagination that is currently rendered with HAML to Vue.

💻 Local testing

Project members

1. Create a project
2. Navigate to "Project" -> "Members"
3. Use the form to add 5 users
4. Change app/controllers/projects/project_members_controller.rb#L31 to:

@project_members = present_members(project_members.non_invite.page(params[:page]).per(2))

Group members

1. Create a group
2. Navigate to "Group" -> "Members"
3. Use the from to add 5 users
4. Use the form to add 5 invited members
   • In the GitLab member or Email address enter an email that a user does not already own
   • Click Invite "example@test.com" by email
5. Change app/controllers/groups/group_members_controller.rb#L8 to 2

📷 Screenshots

View	Before	After
Group members
Group invites
Project members

🚦 Does this MR meet the acceptance criteria?

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