Declare resource as dependency for ALL other resources (/iterate through available resources?)

I want to move some slow operations in ClusterAPI's Tiltfile into a local_resource so that they don't happen every time I touch the Tiltfile. These operations need to run before any k8s resources are deployed.

Currently, my new local_resource WILL run before any k8s resources, but that's not a guarantee we make, so not necessarily something I want to explicitly rely on. Maybe we'll eventually want to make this guarantee explicit, but I think even when local_resources are NOT involved, there's a case for being able to declare a universal dependency, i.e. "resource X must build before ALL other resources".

I could theoretically do this with existing Tiltfile primitives IF I knew the names of all available resources ahead of time (and then my implementation would break if a new resource were added). Another way to make "universal dependencies" ergonomic might be something like:

for name in all_k8s_resources():
    if name != "some_resource":
        k8s_resource(name, deps=["some_resource"]

No files or tests are named in the issue. Start by locating the existing k8s_resource and local_resource dependency handling, then determine how available resources are represented and scheduled. Done means users can declare one resource as a dependency of all other resources without listing their names, with coverage for the relevant resource combinations.