refactor: move test files to __tests__ directory

[asdolo]

What does this do?

Moves all test files into a centralized __tests__ directory at the project root. Renames .spec.ts files to .test.ts for consistency. Updates import paths in moved tests and Sonar exclusions to reflect the new structure. Also fixes a typo: settings.generale → settings.general.

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Why did you do this?

• Test files for entire screens couldn't be created in the app directory because they would be considered routes by expo-router.
• Centralizes test files in one location, making them easier to find and maintain. Aligns with common React Native/JavaScript conventions and improves project organization.

Who/what does this impact?

Developers working with tests: imports in moved tests are updated, and the Sonar configuration excludes the new __tests__ directory. No functional changes.

How did you test this?

• Tested on iOS
• Tested on Android
• Tested on a small device
• Tested on a real device
• Tested all flows related with this PR changes
• Tested accessibility
• Added tests

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Notes:

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Screenshots / Previews

N/A

[github-actions]

💯 Test Coverage

Lines	Statements	Branches	Functions
	60.57% (418/690)	57.4% (159/277)	48.52% (115/237)

😎 Tests Results

Tests	Skipped	Failures	Errors	Time
139	0 💤	0 ❌	0 🔥	31.176s ⏱️

👀 Tests Details • (61%)

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
All files	60.57	57.4	48.52	61.2
app/(app)	40.62	50	21.42	40.62
settings.tsx	0	0	0	0	26–45

[ManuViola77]

👏🏻