update contracts folder structure #1488

Job	Run time
setup-environment	14s
test-scarb-fmt	19s
test-various (season_test)	13s
test-various (combat_test)	20s
test-various (owner_test)	18s
test-various (position_test)	19s
test-various (resources_test)	23s
test-various (config_test)	18s
test-various (hyperstructure_test)	20s
test-various (bank_test)	19s
test-various (map_test)	20s
test-various (resource_bridge_test)	19s
test-various (trade_test)	13s
test-various (realm_test)	19s
test-various (guild_test)	19s
test-various (transport_test)	12s
test-various (test_ownership_systems)	13s
	4m 58s

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