bugfix: Use SFINAE to add overloads that handle std::vector/std::array of bool

[mendes-jose]

Description

This PR aims to solve the compilation error we get when messages have at least one field of type bool[].

This has been discussed in other places, like in these issues here: #445, #393, #391

Also, there has been a PR which proposes a different solution to the same problem: #411

However, I think the solution adopted in this PR here (#446) is superior:

• it's a pure C++ solution (it does not touch the EmPy stuff)
• it avoids creating new methods with similar names (instead it adds overloads for specific cases using enable_if_t)

Tests

The following video shows the bi-directional bridge of messages using vectors of bools based on my version of ros1_bridge:

fix-bool-vec.mp4