Fix and refactor coinbase #58

Job	Run time
apply-label-to-new-pr	2s
check-labels	7s
find-e2e-tests	2s
pull-docker-image	17s
cli: /home/runner/work/subtensor/subtensor/btcli/tests/e2e_tests/test_senate.py	1m 57s
cli: /home/runner/work/subtensor/subtensor/btcli/tests/e2e_tests/test_wallet_interactions.py	2m 40s
cli: /home/runner/work/subtensor/subtensor/btcli/tests/e2e_tests/test_staking_sudo.py	1m 44s
cli: /home/runner/work/subtensor/subtensor/btcli/tests/e2e_tests/test_wallet_creations.py	1m 37s
cli: /home/runner/work/subtensor/subtensor/btcli/tests/e2e_tests/test_root.py	1m 16s
cli: /home/runner/work/subtensor/subtensor/btcli/tests/e2e_tests/test_unstaking.py	2m 8s
	11m 50s

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