These saves have everything unlocked and will take up the slot 1. Copy/paste the save folder in the game files.
For the Android version, here are the steps to follow:
Download the file above on your device
Launch the game
Select the "import" option
You should be prompted to allow the app to access your files. You need to accept so the game can grab the .json file. (It is possible, that by accepting, only multimedia files will be included. If that's the case, you need to go into your device's options to allow all files because .json files are not multimedia.)
Select the "Slot 1.json" file from the file explorer then press "open"
Select the "Load" option from the main menu and load the Slot 1. If the save does not appear immediately, you may need to restart your game.
*The save will be on the slot 1 so make sure it doesn't overwrite your current save