⬆️ Bump up the version that we use to the RC

[shankari]

This ensures that it includes the changes required to support OCPP PnC https://github.com/EVerest/everest-core/pull/588

This involves:

• Changing the tag to 2024.3.0-rc1
• Bumping up the version number in the .env
• Copying over two nodered configurations:
  • to support MREC in the UI (https://github.com/EVerest/everest-core/commit/9e182a983271a2f20f30976364eca912fcd49a8d)
  • to support PnC in the UI (https://github.com/EVerest/everest-core/commit/56a9ff27352a62ee353dd3cdf311cd4f4c8bb76d) These are identical to the ones in everest-core at the specified tag, except that they connect to the mqtt-server MQTT server instead of localhost