test(lua): add import Lua file test

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
test(lua): add Lua 'yield' test

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
test(lua): add Lua State tests

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
test(shell): add command line tests

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>