Add bytecode equivalents to all the tests

[rkabrick]

Not sure if we want to include bytecode with the test (because it seems compiling with mlir-opt -emit-bytecode can be dependent on your version when reading the bytecode (ie. if you compile MLI with a different version of MLIR than the one that you're running mlir-opt with it may be an issue) so perhaps we just add a call to the ctest infrastructure to call

mlir-opt -emit-bytecode <test_file.mlir> -o <test_file.bc> and add a second test to all the cmake files in each test directory. Open to ideas