[WIP] Implement member management page for admins

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

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This section details on the original issue you should resolve

<issue_title>[Community][Admin] Member Management Page</issue_title>
<issue_description>Implement the member management page enabling admins to view, invite, and manage community members.
Refer to legacy code repository for expected layout, UI, and functionality: owner-community admin section

Domain Layer:

• Extend Member aggregate with management operations
• Implement MemberInvitation value objects
• Add domain events: MemberInvited, MemberActivated, MemberRemoved
• Create member search specifications

Application Services:

• Create MemberManagementService
• Implement invite, activate, deactivate, remove operations
• Add bulk operations support

GraphQL:

• Mutations: inviteMember, removeMember, updateMemberRole, bulkInviteMembers
• Queries: getMembers, getMemberInvitations
• Subscriptions: memberUpdated

UI:

• Create member list page with search/filter
• Build member invitation modal/form
• Implement member detail view
• Add bulk actions UI (select, invite, remove)
• Create member status indicators

Testing:

• Unit tests for member operations
• BDD features for invitation workflow
• Integration tests for member queries/mutations
• E2E tests for member management flows
  </issue_description>

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