chore(js): add expo example app and move to pnpm #741

Job	Run time
Run checks (ubuntu-latest)	41s
Run checks (macos-latest)	1m 6s
Run checks (windows-latest)	1m 46s
Run tests (ubuntu-latest)	3m 11s
Build library (iOS) (aarch64-apple-ios)	2m 15s
Run tests (macos-latest)	2m 8s
Build library (iOS) (aarch64-apple-ios-sim)	2m 14s
Build library (Android) (aarch64-linux-android)	5m 54s
Run tests (windows-latest)	5m 4s
Build library (iOS) (x86_64-apple-ios)	2m 55s
Build library (linux-aarch64, ubuntu-latest, libaries_askar.so, aarch64-unknown-linux-gnu, true)	3m 32s
Build library (Android) (armv7-linux-androideabi)	5m 47s
Build library (linux-x86_64, ubuntu-latest, libaries_askar.so, x86_64-unknown-linux-gnu, true)	3m 33s
Build library (Android) (i686-linux-android)	5m 43s
Build library (darwin-universal, macos-latest, libaries_askar.dylib, darwin-universal, beta)	3m 5s
Build library (Android) (x86_64-linux-android)	5m 48s
Build library (windows-x86_64, windows-latest, aries_askar.dll, x86_64-pc-windows-msvc)	4m 28s
Create iOS xcframework	34s
Build and test JavaScript wrapper (linux-aarch64)	51s
Build and test JavaScript wrapper (linux-x86_64)	54s
Build and test Python wrapper (linux-aarch64, 3.8)	24s
Build and test JavaScript wrapper (darwin-universal)	58s
Build and test Python wrapper (linux-x86_64, 3.8)	30s
Build and test Python wrapper (darwin-universal, 3.8)	41s
Build and test Python wrapper (windows-x86_64, 3.8)	43s
Successful build	1s
Create library (Android)	8s
Create iOS and Android release assets	0s
	1h 4m 54s

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