feat: add eip-7251 system contract address/code #2929

Job	Run time
wasm-wasi	53s
clippy	30s
docs	53s
doctest	55s
feature-checks	2m 44s
fmt	12s
no-std	12s
wasm-unknown	41s
test ubuntu-latest stable --no-default-features	1m 9s
test ubuntu-latest stable	1m 7s
cfg-check	28s
test ubuntu-latest nightly --no-default-features	1m 7s
test ubuntu-latest nightly	1m 7s
test ubuntu-latest 1.76 --no-default-features	57s
test ubuntu-latest 1.76	36s
test windows-latest stable --no-default-features	3m 53s
test windows-latest stable	4m 2s
test windows-latest nightly --no-default-features	3m 38s
test windows-latest nightly	4m 3s
test windows-latest 1.76 --no-default-features	3m 23s
test windows-latest 1.76	2m 47s
	35m 17s

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