feat: add embedded package to allow offline functionality

Author: andreynering

pkg/embedded/embedded.go

@@ -0,0 +1,11 @@
+package embedded
+
+import (
+	"github.com/charmbracelet/catwalk/internal/providers"
+	"github.com/charmbracelet/catwalk/pkg/catwalk"
+)
+
+// GetAll returns all registered providers.
+func GetAll() []catwalk.Provider {
+	return providers.GetAll()
+}