feat: Use content type matching rule for V3 message's binary body

[tienvx]

These scenarios didn't apply binary's content type matching rule, so the verifier will compare binary contents, byte to byte, which:

• Is not realistic in my opinion
• Imply that message (v3) doesn't support binary's content type matching rule at all, but it does, at least by using pactffi_with_binary_file (not sure about pactffi_message_with_contents)

[rholshausen]

Those tables are odd. Normally we put the keys along the top.

[JP-Ellis]

I think it's fine. He is following the same pattern as the tables below that within the same file.

[rholshausen]

Oh, yeah, we should find whoever authored this and fire them.

[tienvx]

Before I change the code, I just want to confirm: the code is okay, I only need to move the keys to the top? like this?

Before:

      | body           | file: spider.jpg                                                |
      | matching rules | contenttype-matcher-v3.json                                     |

After:

      | body           | matching rules                                                |
      |file: spider.jpg  | contenttype-matcher-v3.json                                     |

To every places in this file?