feat: set country in config, login to nvidia when starting

[fuckingrobot]

Description

Fixes #161. Refactors Nvidia to hide more of the logic. Adds support for a bunch of countries to Nvidia (with add to cart!) and support for 3090 (despite no DR IDSs).

Testing

Tested on usa and belgium. Use .env as README shows.

[geman220]

This can relatively easily be replicated across stores so that we don't end up with 10 copies of every store for each locale. I'm going to hold off on trying to implement this on other sites until this is tested and merged, but I like where your head is at on this.

[hmellor]

It'd be good to add a config based method for choosing location like in #163 (I closed the PR because it was very similar to this one and I like this one better)

[fuckingrobot]

@hmellor was working on it. See most recent commit.

[hmellor]

Could you add GB from #161? Thanks

[kirbdee]

locales look good to me 👍

[fuckingrobot]

@jef ready for review and merge when you have a moment. Other stores with multiple regions should refactor to use COUNTRY once this is merged.

[gcsabbagh]

Do we plan to allow multiple countries? e.g: I am in Canada, and would like to scan both US and CA stores

[geman220]

Yes, this is the first step in localization. We don't want to localize every store all at once in case there are issues. Nvidia is the first and proof of concept, assuming all goes well we can work on implementing localization across stores.

[kirbdee]

Work around would be to just run two instances with different configs, but also depends on the stores. IE FE's from nvidia would be the same stock

[fuckingrobot]

Not a priority for me, but yes, this is the first step to getting there (while keeping the code clean-ish/manageable).