feat(debug-ui): extend epoch info api #10104

Job	Run time
Backward Compatibility	11m 21s
Protobuf Backward Compatibility	11s
Cargo Nextest (Linux)	11m 19s
Cargo Nextest (Linux Nightly)	11m 9s
Database Migration	11m 34s
Cargo Deny	28s
Cargo Clippy	8m 18s
Cargo Fmt	20s
Non-default Configuration Builds	1m 17s
Themis	39s
Rust Doctests	11m 12s
Protocol Schema	13m 17s
Genesis Changes	12m 20s
Sanity Checks	7m 28s
Style	36s
Upgradability	11m 48s
spellcheck	22s
Cargo Audit	21s
Unused Dependencies	7m 49s
Cargo check publishable packages separately (Linux, linux, ubuntu-latest)	9m 22s
Cargo check publishable packages separately (Windows, win, windows-latest)	2m 48s
Generate Coverage Artifact (unit, unit)	2m 19s
Upload Coverage	24s
	2h 16m 42s

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