Improve clarity on asset mint and universe stats RPC responses #1532

Job	Run time
Compilation check	53s
cross compilation	13m 52s
Format check	38s
Docker build check	5m 28s
run itests	7m 30s
run itests postgres	10m 14s
Lint check	3m 39s
go mod check	1m 12s
RPC check	1m 36s
Sqlc check	23s
test vector check	1m 54s
run unit tests (unit-race)	7m 14s
run unit tests (unit-cover)	5m 26s
run unit tests (unit dbbackend=postgres)	6m 19s
	1h 6m 18s

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