feat: Add Jest mock + integration docs #253

Job	Run time
shared-storage tests (ubuntu-24.04, testAndroidHostTest)	2m 10s
Code quality (format)	1m 1s
Code quality (ts)	1m 8s
shared-storage tests (macos-latest, macosArm64Test)	3m 26s
Code quality (lint)	1m 11s
shared-storage tests (macos-latest, iosSimulatorArm64Test)	4m 44s
report changed files	5s
Windows RN	3m 27s
macOS RN	1m 53s
Android RN	1m 17s
iOS RN	3m 14s
	23m 36s

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