feat(x/fswap): introduce new event(MakeSwapProposal) #4218

Job	Run time
build (amd64, gcc)	37s
build (arm64, aarch64-linux-gnu-gcc, g++-aarch64-linux-gnu)	1m 29s
cleanup-runs	7s
install-tparse	9s
test-cosmovisor	2m 31s
split-test-files	12s
test-race (00)	3m 51s
tests (00)	3m 54s
test-race (01)	3m 7s
tests (01)	5m 0s
tests (02)	4m 58s
test-race (02)	1m 53s
tests (03)	3m 37s
test-race (03)	2m 19s
upload-coverage-report	29s
	34m 13s

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