feat: bundle typing manifests with gem release (#17)

Author: stainless-app[bot]

orb.gemspec

@@ -8,7 +8,7 @@ Gem::Specification.new do |s|
   s.summary = "Ruby library to access the Orb API"
   s.authors = ["Orb"]
   s.email = "[email protected]"
-  s.files = Dir["lib/**/*.rb"]
+  s.files = Dir["lib/**/*.rb", "rbi/**/*.rbi", "sig/**/*.rbs", "manifest.yaml"]
   s.extra_rdoc_files = ["README.md"]
   s.required_ruby_version = ">= 3.0.0"
   s.add_dependency "connection_pool"