Add full conformance to Sendable + thread safety#198

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x-sheep wants to merge 5 commits intoevgenyneu:masterfrom

x-sheep:sendable

Commits on Feb 20, 2025

Make functions throw errors instead of setting lastResultCode
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Commits on Feb 21, 2025

Add Sendable conformance to KeychainSwift, make properties immutable
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Commits on Feb 25, 2025

Use lock in allKeys getter
x-sheep
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Commits on Mar 18, 2025

Add LocalizedError conformance to KeychainError
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Commits on Aug 29, 2025

Fix tests compiling
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