Explain 'Effect Scope' in Vue 3 and its application.

EffectScope is an advanced API that allows grouping and disposing of multiple reactive effects (computed, watchers) at once.

When using the Composition API outside of setup(), reactive effects aren't automatically tied to a component's lifecycle. effectScope() creates a scope object that captures all effects created within it. Calling scope.stop() then disposes of all these effects simultaneously, preventing memory leaks.