Nope.
However, you can write some code to do this. You could write two scripts:
one to add a user, which should register them to all applications
one to add an application, which should register all users
Further reading:
This post is probably worth a read, to clarify how FusionAuth handles users without an application registration: https://fusionauth.io/community/forum/topic/5/can-you-limit-a-user-s-login-authentication-access-to-applications-within-a-single-tenant/2?_=1597070984952
You also might be interested in voting up this issue: https://github.com/FusionAuth/fusionauth-issues/issues/772
You could also file a github issue explaining what you are trying to accomplish, perhaps there's a feature to be written to allow this.