feat(leios-tui): add terminal dashboard for the Leios testnet #68

Job	Run time
Features (--all-features)	1m 6s
Rustfmt	19s
Test (macos-latest)	4m 24s
MSRV (1.88)	46s
Clippy	53s
Isolated no-default-features	27s
Features (--no-default-features)	50s
Docs	54s
Test (windows-latest)	6m 47s
Test (ubuntu-latest)	4m 31s
	20m 57s

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