[wip] feat: add multi-site sync script

[kellymears]

allows for multiple url replacements.

everything is configured in sync.json:

{
  "uploads": "web/app/uploads/",
  "connection": {
    "development": "web@example.test:/srv/www/example.com/shared/uploads/",
    "staging": "web@staging.example.com:/srv/www/example.com/shared/uploads/",
    "production": "web@example.com:/srv/www/example.com/shared/uploads/"
  },
  "secure": {
    "development": false,
    "staging": true,
    "production": true
  },
  "sites": [
    {
      "production": "example.com",
      "staging": "staging.example.com",
      "development": "example.test"
    }
  ]
}

If syncing between two environments that don't share a secure setting, there is a second wp search-replace to change the protocol.

example (from staging to development):

• staging.example.com => example.test
• https://example.test => http://example.test

requirements

• newer bash
• jq

Mac users (and linux users with brew) can run brew install jq bash.

Installing bash is necessary on macos but probably unneeded on most relatively recent linux installs.