Upload the working snap to the store (preferably unlisted until it’s all properly bootstrapped). Once it’s uploaded create a thread in the store-requests subforum asking.
E.G here’s one I did myself that required both a review but also publisher vetting (for higher capability permissions, which process-control likely counts as).
What this actually does is append a signed assertion to the snap download process that verifies that Canonical/Snapcraft reviewers approve the permission being enabled by default. Since this is linked to the store download mechanism, it doesn’t work when installing using --dangerous and for your own testing needs, you’d need to remember to connect plugs explicitly even if your users don’t.