completions/minikube: Add minikube completion (#130)

Co-authored-by: Nsophal <hongsophal@github.com>

completions/minikube.completion.sh

+#!/usr/bin/env bash
+
+# minikube (Kubernetes CLI) completion
+
+if command -v minikube &>/dev/null
+then
+  eval "$(minikube completion bash)"
+fi