Allow registration on matrix.org using a custom helper URL.

[pixlwave]

Follow on to #3281, this PR adds the screen into the authentication flow.

[github-actions]

	Fails
🚫	danger-swift failed.

Log

/var/folders/0g/hj_q_pzx65bbjnslxz9n0src0000gn/T/danger/3407D2D5-0815-4633-8A0C-2CC692A1A062/_tmp_dangerfile.swift:4:11: error: ambiguous use of 'lint'
SwiftLint.lint(inline: true)
          ^
Danger.SwiftLint:13:24: note: found this candidate
    public static func lint(inline: Bool = false, directory: String? = nil, configFile: String? = nil, strict: Bool = false, quiet: Bool = true, lintAllFiles: Bool = false, swiftlintPath: String? = nil) -> [Danger.SwiftLintViolation]
                       ^
Danger.SwiftLint:18:24: note: found this candidate
    public static func lint(_ lintStyle: Danger.SwiftLint.LintStyle = .modifiedAndCreatedFiles(directory: nil), inline: Bool = false, configFile: String? = nil, strict: Bool = false, quiet: Bool = true, swiftlintPath: Danger.SwiftLint.SwiftlintPath? = nil, markdownAction: (String) -> Void = markdown) -> [Danger.SwiftLintViolation]
                       ^
�[31mERROR: Dangerfile eval failed at Dangerfile.swift
�[0;0m�[31mERROR: Could not get the results JSON file at /var/folders/0g/hj_q_pzx65bbjnslxz9n0src0000gn/T/danger/3407D2D5-0815-4633-8A0C-2CC692A1A062/danger-response.json
�[0;0m

Generated by 🚫 dangerJS against e666177

[codecov]

Codecov Report

Attention: Patch coverage is 52.47525% with 48 lines in your changes missing coverage. Please review.

Project coverage is 77.17%. Comparing base (6cfe09b) to head (e666177).
Report is 5 commits behind head on develop.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...owCoordinators/AuthenticationFlowCoordinator.swift	0.00%	42 Missing ⚠️
...tScreen/AuthenticationStartScreenCoordinator.swift	0.00%	4 Missing ⚠️
...artScreen/AuthenticationStartScreenViewModel.swift	60.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3282      +/-   ##
===========================================
+ Coverage    77.14%   77.17%   +0.02%     
===========================================
  Files          730      730              
  Lines        58993    59109     +116     
===========================================
+ Hits         45513    45615     +102     
- Misses       13480    13494      +14     

Flag	Coverage Δ
unittests	68.74% <52.47%> (-0.20%)	⬇️

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[github-actions]

📱 Scan the QR code below to install the build for this PR.
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[stefanceriu]

lgtm, 🚀 it!

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud