Simplify LinkSecret handling #478

Job	Run time
Lint	48s
Build Android Libraries (aarch64-linux-android)	2m 21s
Build Android Libraries (armv7-linux-androideabi)	2m 29s
Build Android Libraries (i686-linux-android)	2m 18s
Build Android Libraries (x86_64-linux-android)	2m 32s
Build ios Libraries (aarch64-apple-ios)	4m 45s
Build ios Libraries (aarch64-apple-ios-sim)	5m 44s
Build ios Libraries (x86_64-apple-ios)	4m 40s
Build Library (linux-aarch64, anoncreds-ubuntu-latest, aarch64-unknown-linux-gnu, libanoncreds.so...	4m 31s
Build Library (linux-x86_64, anoncreds-ubuntu-latest, x86_64-unknown-linux-gnu, libanoncreds.so, ...	4m 55s
Build Library (darwin-x86_64, macos-latest, x86_64-apple-darwin, libanoncreds.dylib)	7m 30s
Build Library (darwin-aarch64, macos-latest, aarch64-apple-darwin, libanoncreds.dylib)	6m 45s
Build Library (darwin-universal, macos-latest, darwin-universal, libanoncreds.dylib)	8m 57s
Build Library (windows-x86_64, anoncreds-windows-latest, windows-x86_64, x86_64-pc-windows-msvc, ...	5m 20s
Test (anoncreds-windows-latest)	3m 45s
Test (anoncreds-ubuntu-latest)	3m 0s
Create android libraries	0s
Create ios xcframework	0s
Create iOS and Android Release Assets	0s
Build Python (anoncreds-ubuntu-latest, linux-aarch64, manylinux2014_aarch64)	26s
Build Python (anoncreds-ubuntu-latest, linux-x86_64, manylinux2014_x86_64)	31s
Build Python (macos-latest, darwin-universal, macosx_10_9_universal2)	5m 4s
Build Python (anoncreds-windows-latest, windows-x86_64, win_amd64)	2m 16s
Build and Test JavaScript wrapper	1m 28s
	1h 20m 5s

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