chore: project layout (images, image assets)

[igor-sirotin]

Iterates #7067

Description

1. Moved images -> internal/images
2. Refactored the way images are loaded in tests
   • Most tests now use gofakeit.ImagePng or gofakeit.ImageJpg
   • If real image is needed, it's loaded from testdata rather than from binary assets
3. Killed _assets/tests
   • Some files moved to corresponding <package>/testdata where it's used
   • Some files deleted as unused
4. Deleted now unused images/qr-assets.go

[status-im-auto]

Jenkins Builds

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	2236bda	#1	2025-12-12 22:24:36	~4 min	linux/status-go	📦zip
❌	2236bda	#1	2025-12-12 22:24:46	~4 min	macos/nwaku	📄log
✔️	2236bda	#1	2025-12-12 22:24:58	~4 min	macos/status-go	📦zip
✖️	2236bda	#1	2025-12-12 22:25:37	~5 min	tests	📄log
✖️	2236bda	#1	2025-12-12 22:25:58	~5 min	tests	📄log
✔️	2236bda	#1	2025-12-12 22:28:50	~8 min	linux/nwaku	📦zip
✔️	2236bda	#1	2025-12-12 22:29:16	~8 min	windows/status-go	📦zip
❌	2236bda	#1	2025-12-12 22:35:38	~15 min	windows/nwaku	📄log
✖️	2236bda	#1	2025-12-12 22:36:36	~16 min	tests-rpc	📄log
✖️	2236bda	#1	2025-12-12 22:38:08	~17 min	tests-rpc	📄log

[codecov]

Codecov Report

❌ Patch coverage is 2.85714% with 34 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (chore/project-layout-4-1@52e0af6). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
pkg/testutils/images.go	0.00%	28 Missing ⚠️
protocol/persistence.go	0.00%	3 Missing ⚠️
server/handlers.go	0.00%	3 Missing ⚠️

❌ Your patch check has failed because the patch coverage (2.85%) is below the target coverage (50.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@                     Coverage Diff                     @@
##             chore/project-layout-4-1    #7206   +/-   ##
===========================================================
  Coverage                            ?   34.97%           
===========================================================
  Files                               ?      806           
  Lines                               ?   111217           
  Branches                            ?        0           
===========================================================
  Hits                                ?    38896           
  Misses                              ?    67456           
  Partials                            ?     4865           

Flag	Coverage Δ
functional	34.97% <2.85%> (?)

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

Files with missing lines	Coverage Δ
internal/db/multiaccounts/database.go	64.85% <ø> (ø)
internal/images/adjust.go	0.00% <ø> (ø)
internal/images/color.go	0.00% <ø> (ø)
internal/images/decode.go	19.54% <ø> (ø)
internal/images/encode.go	29.72% <ø> (ø)
internal/images/identity.go	44.44% <ø> (ø)
internal/images/initials.go	0.00% <ø> (ø)
internal/images/main.go	36.25% <ø> (ø)
internal/images/manipulation.go	11.81% <ø> (ø)
internal/images/meta.go	0.00% <ø> (ø)
... and 34 more