feat(accounts): enhance auth account data structure

[setchy]

• Introduce new accounts type that unlocks the possibility of authenticating one or more accounts at once, across any combination of support auth methods (personal access token or oauth app) and across any platforms (github cloud or github enterprise server)

• Update logic to support new account structures

• Implemented a legacy auth/account migration process to help seamlessly transition existing authenticated users.

Note: there is a handful of follow-up PRs required in order to expand functionality beyond "at most one account of each auth method"

[setchy]

@afonsojramos @bmulholland - I'd appreciate if you could please test this branch locally when you have a moment.

[setchy]

OK - @bmulholland @afonsojramos - I feel like this is ready for your eyes and feedback.

It largely focuses on the new account data structure and legacy account migration logic.

If all goes well, you'll notice no difference :)

[setchy]

👀 looking into the coverage drop

[brandonweiss]

@setchy I think you might have tagged the wrong person 😬

[bmulholland]

Any chance there's more that could be pulled out? Not sure when I'll have time for an 800 line review :)

[setchy]

It's as lean as i think makes sense...

It's not as scary as it may appear

[setchy]

@bmulholland - thinking more about this... I could do the following PRs

1. new unused types

• contains the new Account types
• set sensible defaults
• leave unused

2. migration utility

• logic to migrate legacy accounts to the new account structure

3. switch all API calls to use the new account object from 1 above.

lmk what you think.

[afonsojramos]

Managed to find the time and it looks good to me code wise! Will test locally in the next few minutes!

[setchy]

Thanks @afonsojramos - anything explode haha

[afonsojramos]

@setchy When I opened I didn't have the live one open. And now if I try to open the live one it doesn't open either.

[afonsojramos]

If I open both, "live" one first, then local, the local one show the login screen.

While the live one stays on the white screen.

[setchy]

🥹

[setchy]

The stacktrace might be unrelated to this PR... similar error reported in #1166

EDIT: pr raised #1167

[afonsojramos]

Looking good!