This component implements the fuchsia.process.Resolver
protocol. This protocol is used by the #!resolve
trampoline implemented in fdio
that can launch a binary from any Fuchsia package.
process-resolver uses the fuchsia.pkg.PackageResolver
capability from its namespace to resolve packages. Product configuration determines whether this capability is provided by the base-resolver (so only base shell packages can be resolved) or the pkg-resolver (so base, cache, or universe shell packages can be resolved).