Added completion for havener #2581

Author: nicholasdille

tools.yaml

@@ -2552,6 +2552,11 @@ tools:
       type: tarball
       files:
       - havener
+    post_install: |
+      echo "Install completion"
+      ${binary} completion bash >"${target}/share/bash-completion/completions/${name}"
+      ${binary} completion fish >"${target}/share/fish/vendor_completions.d/${name}.fish"
+      ${binary} completion zsh >"${target}/share/zsh/vendor-completions/_${name}"
 
   - name: hcloud
     version: 1.30.2