Implem the procedural macro `inline_assert_size_eq` to check the size of
a type at compile time. Additionally, add the test file
`inline_assert_size_eq_failed.rs` to ensure that the macro tirggers a
compile-time error when the size is not as expected
Fixes google#1329

To avoid confusion with the existing `const_assert` macro. I named the
macro to assert the falsehood of an expression at compile time
`static_const_assert`
Rename `inline_assert_size_eq` to `assert_size_eq_val`