move shell scripts and zsh and add fav vscode themes

shell/shell_scripts/check_port_network.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+# Check a whether a port is open or not
+#
+# then use the script in your tests like
+# check_port 9200
+
+function check_port() {
+  local host=${1} && shift
+  local port=${1} && shift
+  local retries=5
+  local wait=1
+
+  until( nc -zv "${host}" "${port}" ); do
+    ((retries--))
+    if [ $retries -lt 0 ]; then
+      echo "Service ${host}:${port} didn't become ready in time."
+      exit 1
+    fi
+    sleep "${wait}"
+  done
+}
+
+check_port "localhost" "$@"