Use full-text search for autosuggestions

Gemfile

Gemfile.lock

app/assets/javascripts/components/actions/compose.jsx

app/assets/javascripts/components/components/avatar.jsx

...nents/features/compose/components/autosuggest_account.jsx

...ures/compose/containers/autosuggest_account_container.jsx

...cripts/components/features/ui/components/compose_form.jsx

...ponents/features/ui/containers/compose_form_container.jsx

app/assets/javascripts/components/reducers/accounts.jsx

app/assets/javascripts/components/reducers/compose.jsx

app/controllers/api/v1/accounts_controller.rb

app/models/account.rb

app/services/search_service.rb

config/routes.rb