Avatars and Usernames color change

[Velin92]

• New color for avatars and username.
• Also the font of the placeholder is now computed proportionally to the encapsulating view.
• Placeholder in notifications is also going to be updated
• This also fixes the misalignment between web and el-x (when web will support the new colouring system ofc)

I might need to update all the UI tests.

fixes #1603

Part of element-hq/compound#137

[github-actions]

	Warnings
⚠️	Some of the commits are missing ticket numbers. Please consider squashing all commits that don't have a tracking number.
⚠️	You seem to have made changes to views. Please consider adding screenshots.

Generated by 🚫 Danger Swift against 7117ac2

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.16% ⚠️

Comparison is base (6df74aa) 57.68% compared to head (c06e284) 57.53%.

❗ Current head c06e284 differs from pull request most recent head 7117ac2. Consider uploading reports for the commit 7117ac2 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1610      +/-   ##
===========================================
- Coverage    57.68%   57.53%   -0.16%     
===========================================
  Files          410      410              
  Lines        27673    27662      -11     
  Branches     13729    13721       -8     
===========================================
- Hits         15964    15915      -49     
- Misses       11264    11304      +40     
+ Partials       445      443       -2     

Flag	Coverage Δ
unittests	22.80% <0.00%> (-0.11%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
DesignKit/Sources/Colors/ElementColors.swift	100.00% <ø> (ø)
...entX/Sources/Other/EffectsScene/EffectsScene.swift	0.00% <0.00%> (ø)
...urces/Other/Extensions/UNNotificationContent.swift	0.00% <0.00%> (ø)
...s/Other/SwiftUI/Views/PlaceholderAvatarImage.swift	47.27% <0.00%> (-11.22%)	⬇️
...een/View/Style/TimelineItemBubbledStylerView.swift	67.55% <0.00%> (-0.30%)	⬇️
...creen/View/Style/TimelineItemPlainStylerView.swift	0.00% <0.00%> (ø)

... and 2 files with indirect coverage changes

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[pixlwave]

These look sooo good. Thank you for taking the time to implement this 🙌

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[amshakal]

So fast!!