Change update pkg path to /data/pkg to allow for easier install on latest GoldHen

[Masamune3210]

If the path the update pkg was downloaded to was changed to /data/pkg instead of just /data, the user would be able to just go to the package installer and install it as long as they are on the latest version of goldhen

[Masamune3210]

Just realized that this sounds like a demand, I promise you I do not mean it as such. I tried to make a pull request to do it myself but....it didn't go so well

[bucanero]

For backwards compatibility, I'll probably check if /data/pkg folder exists, then use it. If not, then download to /data as usual.

I also need to test the integration with the HB Store API #105 . That would also allow to update the app using the homebrew store app if the user has it installed.

[bucanero]

fixed in 3323439