fix extensions versions

ocis-pkg/version/version.go

@@ -0,0 +1,19 @@
+package version
+
+import (
+	"time"
+)
+
+var (
+	// String gets defined by the build system.
+	String = "0.0.0"
+
+	// Date indicates the build date.
+	Date = "00000000"
+)
+
+// Compiled returns the compile time of this service.
+func Compiled() time.Time {
+	t, _ := time.Parse("20060102", Date)
+	return t
+}