azimafroozeh - add fastlanes expression encoding for type int64_t #105

Job	Run time
check-format (ubuntu-latest)	12s
build (ubuntu-latest, Debug, clang++)	5m 33s
build (ubuntu-latest, Release, clang++)	5m 33s
build (macos-latest, Debug, clang++)	2m 22s
build (macos-latest, Release, clang++)	3m 43s
build (president, Debug, clang++)	1s
build (president, Release, clang++)	1s
build (windows-latest, Debug, clang++)	6m 8s
build (windows-latest, Release, clang++)	4m 32s
generate_dataset	0s
build-iwyu	0s
example	0s
test	0s
	28m 5s

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