all: move main transaction pool into a subpool #27463 #6728

Job	Run time
tests (O-S tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFinOrg/...	1m 40s
tests (D-I tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFinOrg/...	2m 22s
tests (A-B tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFinOrg/...	1m 51s
tests (C-[p-z] tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFin...	59s
tests (C-[n-o] tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFin...	2m 35s
tests (T-Z tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFinOrg/...	1m 23s
tests (C-[a-m] tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFin...	1m 48s
tests (J-N tests, go run build/ci.go test -coverage $(go list ./... \| grep "github.com/XinFinOrg/...	1m 27s
tag_build	-1s
devnet_build_push	-1s
devnet_send_notification	0s
devnet_k8_apply	0s
	14m 3s

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