github: use the same issue templates as those found in LND repository #1687

Job	Run time
RPC check	1m 39s
Docker build check	4m 13s
cross compilation	16m 6s
Compilation check	42s
Format check	26s
Lint check	6m 44s
go mod check	2m 12s
Sqlc check	2m 15s
test vector check	1m 49s
run unit tests (unit-race)	8m 2s
run itests	9m 30s
run unit tests (unit-cover)	4m 18s
run itests postgres	14m 13s
run unit tests (unit dbbackend=postgres)	6m 22s
	1h 18m 31s

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