chore(js): add expo example app and move to pnpm #744

Job	Run time
Run checks (ubuntu-latest)	1m 8s
Run checks (macos-latest)	1m 16s
Run checks (windows-latest)	2m 17s
Build library (iOS) (aarch64-apple-ios)	2m 48s
Run tests (ubuntu-latest)	3m 9s
Build library (iOS) (aarch64-apple-ios-sim)	2m 15s
Build library (linux-aarch64, ubuntu-latest, libaries_askar.so, aarch64-unknown-linux-gnu, true)	3m 30s
Run tests (macos-latest)	2m 16s
Build library (iOS) (x86_64-apple-ios)	2m 48s
Build library (Android) (aarch64-linux-android)	5m 10s
Build library (linux-x86_64, ubuntu-latest, libaries_askar.so, x86_64-unknown-linux-gnu, true)	3m 39s
Run tests (windows-latest)	4m 35s
Build library (Android) (armv7-linux-androideabi)	5m 8s
Build library (darwin-universal, macos-latest, libaries_askar.dylib, darwin-universal, beta)	3m 2s
Build library (Android) (i686-linux-android)	5m 9s
Build library (windows-x86_64, windows-latest, aries_askar.dll, x86_64-pc-windows-msvc)	4m 30s
Build library (Android) (x86_64-linux-android)	5m 7s
Create iOS xcframework	30s
Create library (Android)	14s
Create iOS and Android release assets	0s
Build and test Python wrapper (linux-aarch64, 3.8)	27s
Build and test Python wrapper (linux-x86_64, 3.8)	28s
Build and test Python wrapper (darwin-universal, 3.8)	47s
Build and test JavaScript wrapper (linux-aarch64)	1m 4s
Build and test Python wrapper (windows-x86_64, 3.8)	49s
Build and test JavaScript wrapper (linux-x86_64)	57s
Build and test JavaScript wrapper (darwin-universal)	57s
Successful build	1s
	1h 4m 1s

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