Update vendor

vendor/github.com/mudler/cobra-extensions/README.md

@@ -0,0 +1,19 @@
+# cobra-extensions
+Create git-alike extensions for your cobra projects!
+
+## Usage
+
+```
+import "github.com/mudler/cobra-extensions"
+
+// Detect my-awesome-cli-foo, my-awesome-cli-bar in $PATH and extensiopath1 (relative to the bin)
+// it also accepts abspath
+exts := extensions.Discover("my-awesome-cli", "extensiopath1", "extensiopath2")
+
+fmt.Println("Detected extensions:", exts)
+
+for _, ex := range exts {
+  name := ex.Short()
+  cobraCmd := ex.CobraCommand()
+}
+```