fix(did_parser): Add readme and simple example (#1047) #6478

Job	Run time
verify-code-formatting	20s
workflow-setup	36s
aries_vcx_core_clippy (credx,vdrtools_wallet)	3m 10s
aries_vcx_clippy (credx,vdrtools_wallet)	2m 18s
aries_vcx_core_clippy (vdr_proxy_ledger)	3m 34s
workspace_clippy	3m 21s
aries_vcx_clippy (vdr_proxy_ledger)	4m 54s
build-docker-vdrproxy	11s
code-coverage-aries-vcx-integration-modular-libs	5m 20s
test-integration-aries-vcx	2m 11s
x86_64-unknown-linux-gnu	5m 54s
x86_64-unknown-linux-musl	5m 44s
test-integration-aries-vcx-mysql	5m 16s
test-integration-did-crate	1m 48s
x86_64-apple-darwin	8m 42s
test-integration-libvcx	2m 52s
aarch64-apple-darwin	24m 45s
test-integration-node-wrapper (18.x)	12m 17s
test-unit-workspace	1m 44s
workflow-setup-check	1s
publish-docker-vdrproxy	2s
test-integration-aries-vcx-vdrproxy	2m 28s
make-release	0s
publish-napi	0s
publish-node-wrapper	0s
publish-agent-core	0s
	1h 37m 28s

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