refactor shared structs, api responses #1325

Job	Run time
Clippy	46s
Format	28s
Docker (rewards, rewards)	13m 23s
Tests	1m 21s
Docker (chain, chain)	13m 15s
Docker (governance, governance)	13m 48s
Docker (cometbft, cometbft)	13m 12s
Docker (webserver, webserver)	14m 26s
Docker (pos, pos)	13m 15s
Validate Swagger	36s
Docker (parameters, parameters)	13m 26s
Docker (transactions, transactions)	13m 35s
can_enqueue	4s
can_merge	0s
	1h 51m 35s

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