Add optional memo to TAP addresses #2064

Job	Run time
cross compilation	3m 33s
Docker build check	2m 50s
Format check	24s
Compilation check	29s
run itests	7m 6s
run itests postgres	12m 16s
Lint check	1m 56s
go mod check	28s
RPC check	1m 6s
Sqlc check	18s
test vector check	50s
run unit tests (unit-race)	4m 59s
run unit tests (unit-cover)	1m 49s
run unit tests (unit dbbackend=postgres)	3m 40s
	41m 44s

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