Add backtrace capturing, prototype a test err handling #6356

Job	Run time
workflow-setup	30s
verify-code-formatting	23s
aries_vcx_clippy (credx,vdrtools_wallet)	4m 40s
aries_vcx_core_clippy (credx,vdrtools_wallet)	4m 6s
aries_vcx_core_clippy (vdr_proxy_ledger)	3m 12s
aries_vcx_clippy (vdr_proxy_ledger)	3m 30s
workspace_clippy	3m 44s
workflow-setup-check	1s
build-docker-vdrproxy	11s
test-unit-workspace	3m 54s
code-coverage-aries-vcx-integration-modular-libs	5m 52s
test-integration-aries-vcx	5m 43s
test-integration-aries-vcx-mysql	4m 42s
test-integration-did-crate	3m 32s
test-integration-libvcx	4m 12s
test-integration-node-wrapper (18.x)	8m 41s
x86_64-unknown-linux-gnu	5m 56s
x86_64-unknown-linux-musl	11m 32s
x86_64-apple-darwin	5m 33s
aarch64-apple-darwin	22m 53s
test-integration-aries-vcx-vdrproxy	4m 55s
publish-docker-vdrproxy	10s
make-release	0s
publish-napi	58s
publish-node-wrapper	39s
publish-agent-core	1m 0s
	1h 50m 29s

Provide feedback