Adding support for email identity #8079

Job	Run time
parachain-dynamic-contract-test	18s
fmt	1m 6s
set-condition	8s
sequentialise	1s
identity-build	5m 6s
parachain-build-dev	4m 45s
tee	4m 58s
bitacross	4m 58s
bitacross-build	3m 3s
parachain-clippy	0s
parachain-runtime-test	0s
parachain-unit-test	0s
litentry	1s
rococo	1s
lit-sign-bitcoin	2s
${{ matrix.test_name }}	1s
${{ matrix.test_name }}	1s
push-docker	1s
	24m 30s

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