chore: Adds a script to prepare repo for migration to main ArgoCD Repo (#766)

* Adds a script to prepare repo for migration to main ArgoCD Repo

Signed-off-by: Patroklos Papapetrou <ppapapetrou76@gmail.com>

* remove also .gitignore

Signed-off-by: Patroklos Papapetrou <ppapapetrou76@gmail.com>

* fix script

Signed-off-by: Patroklos Papapetrou <ppapapetrou76@gmail.com>

* address pr comments

Signed-off-by: Patroklos Papapetrou <ppapapetrou76@gmail.com>

---------

Signed-off-by: Patroklos Papapetrou <ppapapetrou76@gmail.com>

Author: ppapapetrou76

prepare.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+mkdir dir1
+# Move all files and directories except dir1 and prepare.sh
+for item in *; do
+  if [[ "$item" != "dir1" && "$item" != "prepare.sh" ]]; then
+    mv "$item" dir1/
+  fi
+done
+git rm -r pkg specs agent internal go.* Dockerfile LICENSE OWNERS README.md docs hack codecov.yml sonar-project.properties .github/ .golangci.yaml .gitignore
+rm dir1/sonar-project.properties dir1/codecov.yml
+mv dir1/ gitops-engine
+git checkout -b migrate
+git add gitops-engine
+git add prepare.sh
+git commit --signoff -m "prepare repo for migration to ArgoCD repo"