chore: Copy the in-mem logging functions to the FFI crate

rust/pact_ffi/src/log/inmem_buffer.rs

@@ -18,7 +18,7 @@ pub(crate) struct InMemBuffer { }
 
 impl Write for InMemBuffer {
   fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-    write_to_log_buffer(buf);
+    pact_matching::logging::write_to_log_buffer(buf);
     Ok(buf.len())
   }