Add ability to add invitee to workspaces automatically (#975)

frontend/src/models/admin.js

...tend/src/pages/Admin/Invitations/NewInviteModal/index.jsx

server/endpoints/admin.js

server/endpoints/api/admin/index.js

server/models/invite.js

server/prisma/migrations/20240326231053_init/migration.sql

server/prisma/schema.prisma

server/swagger/openapi.json

server/utils/files/logo.js

server/utils/http/index.js