e2e - improve tests

[thedoublejay]

What kind of PR is this?:

/kind refactor

What this PR does / why we need it:

1. Improved overall e2e tests
2. Updated structure for Onboarding and with Wallet context
3. Updated naming to more english like sentences, so we can use it as reference for Manual Testing
4. Remove LoadingNavigator as Loading will be loaded as a component
5. Added missing tests and improved overall test coverage

Which issue(s) does this PR fixes?:

Fixes #

Additional comments?:

[codeclimate]

Code Climate has analyzed commit 8981289 and detected 0 issues on this pull request.

View more on Code Climate.

[codecov]

Codecov Report

Merging #461 (8981289) into main (eba1880) will increase coverage by 62.72%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##             main     #461       +/-   ##
===========================================
+ Coverage   23.99%   86.72%   +62.72%     
===========================================
  Files         104      111        +7     
  Lines        1771     1861       +90     
  Branches      292      299        +7     
===========================================
+ Hits          425     1614     +1189     
+ Misses       1344      246     -1098     
+ Partials        2        1        -1     

Impacted Files	Coverage Δ
app/components/LoadingScreen.tsx	100.00% <ø> (ø)
...ns/AppNavigator/screens/Balances/ConvertScreen.tsx	97.18% <ø> (+97.18%)	⬆️
...reens/AppNavigator/screens/Dex/DexAddLiquidity.tsx	98.48% <ø> (+98.48%)	⬆️
...pNavigator/screens/Dex/PoolSwap/PoolSwapScreen.tsx	95.74% <ø> (+95.74%)	⬆️
app/screens/TransactionAuthorization.tsx	86.04% <ø> (+84.49%)	⬆️
...Navigator/screens/CreateWallet/EnrollBiometric.tsx	0.00% <ø> (ø)
...ator/screens/CreateWallet/VerifyMnemonicWallet.tsx	85.71% <ø> (+83.67%)	⬆️
...or/screens/RestoreWallet/RestoreMnemonicWallet.tsx	100.00% <ø> (+100.00%)	⬆️
...avigator/screens/components/OnboardingCarousel.tsx	100.00% <ø> (+84.61%)	⬆️
app/store/block.ts	100.00% <ø> (+100.00%)	⬆️
... and 65 more

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[netlify]

✔️ Deploy Preview for defi-wallet ready!

🔨 Explore the source changes: 8981289

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[defichain-bot]

Build preview for DeFi Wallet is ready!

Built with commit 4294354

https://expo.io/@defichain/wallet?release-channel=pr-preview-461

[cypress]

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Test summary

165 • 0 • 0 • 0

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Run details

Project	wallet
Status	Passed
Commit	4294354 ℹ️
Started	Aug 7, 2021 3:49 AM
Ended	Aug 7, 2021 4:06 AM
Duration	17:02 💡
OS	Linux Ubuntu - 20.04
Browser	Chrome 92

View run in Cypress Dashboard ➡️

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