chore: establish chub go foundation

cmd/chub/main.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"chub/internal/platform/logging"
+)
+
+const version = "0.1.0-dev"
+
+func main() {
+	ctx := context.Background()
+	logger := logging.New(os.Stderr)
+	logger.InfoContext(ctx, "chub starting", "version", version)
+	fmt.Printf("Chub %s\n", version)
+}