fix(did_parser): Add readme and simple example (#1047) #6476

Job	Run time
aries_vcx_clippy (credx,vdrtools_wallet)	2m 12s
verify-code-formatting	29s
aries_vcx_core_clippy (credx,vdrtools_wallet)	1m 36s
aries_vcx_clippy (vdr_proxy_ledger)	2m 31s
workflow-setup	18s
aries_vcx_core_clippy (vdr_proxy_ledger)	1m 54s
workspace_clippy	5m 24s
workflow-setup-check	4s
test-unit-workspace	1m 40s
test-integration-aries-vcx	2m 5s
build-docker-vdrproxy	12s
code-coverage-aries-vcx-integration-modular-libs	3m 34s
x86_64-unknown-linux-gnu	2m 53s
test-integration-aries-vcx-mysql	2m 7s
test-integration-did-crate	1m 43s
x86_64-unknown-linux-musl	5m 38s
test-integration-libvcx	4m 17s
x86_64-apple-darwin	3m 44s
test-integration-node-wrapper (18.x)	10m 38s
aarch64-apple-darwin	25m 16s
test-integration-aries-vcx-vdrproxy	2m 42s
publish-docker-vdrproxy	3s
make-release	0s
publish-napi	0s
publish-node-wrapper	0s
publish-agent-core	0s
	1h 21m 0s

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