Add Projection query as in MongoDB for events #42
Description
MongoDB
db.coll('query', 'id, name, lastname');
Solido
const items = MyContract.projection(eventPromise, 'user')
// [{ user: 'john lopez'}, {user: 'don rodriguez' }]
{{ message }}
db.coll('query', 'id, name, lastname');
const items = MyContract.projection(eventPromise, 'user')
// [{ user: 'john lopez'}, {user: 'don rodriguez' }]