add electorate estimate #777

Job	Run time
build	23m 1s
Build Runtimes (encointer-node-notee)	13m 23s
build-try-runtime-and-benchmarks	22m 31s
Cancel Previous Runs	3s
unit-tests	18m 1s
Rust check +nightly fmt --all -- --check (x86_64-unknown-linux-gnu)	55s
cargo-toml-fmt	8s
Rust check clippy -p encointer-client-notee (x86_64-unknown-linux-gnu)	10m 25s
test_bootstrap_demo_community.sh	21m 41s
test_bot_community.sh	7m 47s
test_register_business.sh	2m 5s
Draft Release	13s
Publish Runtimes (encointer-node-notee)	11s
	2h 0m 24s

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