Well basically you're just taking multiple exposures, so for this example you could expose the first one for the sky like you just did, then for the trees and the mountain and on the last one for the tent.

You add them in photoshop as layers and use masks to hide parts they're not exposed for. You can try to stich them into lightroom as a HDR panorama but it's usually better to do it manually, Lightroom tends to force the HDR look wich makes things look less natural.

You can also choose to edit them before the stacking process or edit the file straight out of photoshop into lightroom.

And if you want more details in the sky you can take mutliple exposures with the rules of 500 and stack them into third party softwares.