Add app context and revamps App.tsx

[lucferbux]

Description

Add a High Level context (TBD the content of the context itself) to load before dashboard init.
Also added some utils to make sure we persist some of the data.

How Has This Been Tested?

Change the harcoded values from the customHook to get different screens.

Merge criteria:

• The commits and have meaningful messages; the author will squash them after approval or will ask to merge with squash.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[lucferbux]

@Griffin-Sullivan I wanna merge your PR first so then i can refactor the imports to the right format.
Also, I'm gonna add the first cypress tests to cover the loading and error state, will do once merged the other PR.

[Griffin-Sullivan]

Couple of small things that don't matter. I tested the different states and they loaded properly. userError = true, configError = true, loading = true, and normal. Not sure how we can test browser storage at the moment so can't speak on that, but the code looks good to me.

[alexcreasy]

/approve

[alexcreasy]

/lgtm

[alexcreasy]

/approve cancel

[alexcreasy]

@lucferbux just needs the test failure fixed

[ederign]

Hold on this until we discuss a few things!

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ederign, Griffin-Sullivan

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[ederign]

/lgtm