Add UserSessionStore and SplashScreen.

[pixlwave]

This PR makes the following changes:

• Adds the FTUE splash screen from EI with a single button for login.
• Adds a UserSessionStore and updates the state machine for this change (in a separate commit so easier to review).
• Replaces the code block background colour with one from DesignKit.

Note: I've left the splash screen as handled by the authentication coordinator so that you can pop from the login screen back to it like in EI.

[github-actions]

	Warnings
⚠️	This pull request seems relatively large. Please consider splitting it into multiple smaller ones.

Generated by 🚫 Danger Swift against 059c440

[pixlwave]

Should we increase this rule perhaps? Or maybe just disable it for this one method as its clearly going to grow more.

[codecov-commenter]

Codecov Report

Merging #82 (b982122) into develop (272fc50) will increase coverage by 1.26%.
The diff coverage is 33.70%.

❗ Current head b982122 differs from pull request most recent head 7cb3265. Consider uploading reports for the commit 7cb3265 to get more accurate results

@@             Coverage Diff             @@
##           develop      #82      +/-   ##
===========================================
+ Coverage    16.10%   17.37%   +1.26%     
===========================================
  Files          121      131      +10     
  Lines         9302     9630     +328     
  Branches      4690     4823     +133     
===========================================
+ Hits          1498     1673     +175     
- Misses        7757     7905     +148     
- Partials        47       52       +5     

Impacted Files	Coverage Δ
ElementX/Sources/AppCoordinator.swift	0.00% <0.00%> (ø)
ElementX/Sources/AppCoordinatorStateMachine.swift	0.00% <0.00%> (ø)
ElementX/Sources/Generated/Assets.swift	51.28% <ø> (-5.65%)	⬇️
...tUI/Views/ViewFrameReader/FramePreferenceKey.swift	0.00% <0.00%> (ø)
...ens/Authentication/AuthenticationCoordinator.swift	0.00% <0.00%> (ø)
...rces/Services/UserSession/KeychainController.swift	0.00% <ø> (ø)
...ources/Services/UserSession/UserSessionStore.swift	0.00% <0.00%> (ø)
...s/Screens/SplashScreen/SplashScreenViewModel.swift	17.64% <17.64%> (ø)
...Screens/SplashScreen/SplashScreenCoordinator.swift	35.29% <35.29%> (ø)
...urces/Screens/SplashScreen/View/SplashScreen.swift	46.15% <46.15%> (ø)
... and 9 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 272fc50...7cb3265. Read the comment docs.

[github-actions]

Changes in 82 (2022-06-16)

✨ Features

• Implement rageshake service. (#23)
• Add filtering for rooms by name. (#26)
• DesignKit: Add initial implementation of DesignKit to the repo as a Swift package. (#43)

🙌 Improvements

• Add a UserSessionStore and the splash screen from Element iOS. (#40)
• DesignKit: Add DesignKit to the ElementX project, style the login screen with it and tint the whole app. (#43)

🐛 Bugfixes

• ElementInfoPlist: Use custom template for Info.plist. (#71)

🧱 Build

• Use v0.0.1 of the DesignTokens package. (#78)

📱 Scan the QR code below to install the build for this PR.
🔒 This build is for internal testing purpose. Only devices listed in the ad-hoc provisioning profile can install Element Alpha.

If you can't scan the QR code you can install the build via this link: https://i.diawi.com/1QMkxh

[stefanceriu]

Looks great! 👏

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
11 Code Smells

No Coverage information
0.0% Duplication