Update uniffi readme #7703

Job	Run time
workflow-setup	23s
verify-code-formatting	34s
workspace_clippy (vdrtools_wallet)	3m 43s
aries_vcx_clippy (credx,vdrtools_wallet)	2m 14s
workspace_clippy (askar_wallet)	3m 48s
aries_vcx_clippy (vdr_proxy_ledger,vdrtools_wallet)	3m 1s
test-compatibility-aries-vcx-wallet	2m 31s
build-docker-aath-backchannel	8m 9s
build-docker-vdrproxy	7m 15s
test-integration-aries-vcx (vdrtools_wallet,credx)	8m 28s
test-integration-aries-vcx (askar_wallet,credx)	8m 41s
test-integration-aries-vcx-anoncreds-rs	6m 11s
test-integration-aries-vcx-mysql	4m 32s
test-integration-did-crate	3m 51s
test-unit-workspace	4m 14s
test-wallet-migrator	2m 33s
workflow-setup-check	1s
publish-docker-vdrproxy	2s
test-integration-aries-vcx-vdrproxy	11m 25s
publish-docker-aath-backchannel	0s
make-release	0s
	1h 21m 36s

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