Add backtrace capturing, prototype a test err handling #6467

Job	Run time
aries_vcx_clippy (credx,vdrtools_wallet)	2m 11s
aries_vcx_core_clippy (credx,vdrtools_wallet)	2m 41s
aries_vcx_clippy (vdr_proxy_ledger)	3m 49s
workflow-setup	30s
verify-code-formatting	28s
aries_vcx_core_clippy (vdr_proxy_ledger)	1m 54s
workspace_clippy	7m 50s
code-coverage-aries-vcx-integration-modular-libs	7m 17s
test-integration-aries-vcx	9m 26s
build-docker-vdrproxy	9s
x86_64-unknown-linux-gnu	6m 46s
x86_64-unknown-linux-musl	9m 8s
x86_64-apple-darwin	16m 47s
test-integration-aries-vcx-mysql	2m 21s
test-integration-did-crate	4m 2s
aarch64-apple-darwin	22m 24s
test-integration-libvcx	3m 20s
test-integration-node-wrapper (18.x)	6m 27s
test-unit-workspace	4m 18s
workflow-setup-check	1s
publish-docker-vdrproxy	6s
test-integration-aries-vcx-vdrproxy	2m 42s
make-release	0s
publish-napi	0s
publish-node-wrapper	0s
publish-agent-core	0s
	1h 54m 37s

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