Support Buffers in Expect Matchers and Pretty Format

[YetAnotherClown]

This Pull Request adds support for comparing buffers using Expect Matchers and adds support for them in Pretty Format, tests are included for buffers in matchers.

To compare buffers, the matchers use:

buffer.tostring(someBuffer) == buffer.tostring(expectedBuffer)

This represents the bytes in the Buffers as a string, which we can then use to determine if the buffers are strictly equal.

As for Pretty Format, it will print out something like buffer { size = 8, data = "0/0/0/0/0/202/182/64" }. This represents the data as numerical representation of bytes. I've also added a matcher hint when comparing buffers that are not nested in a table to suggest first reading from the buffer, as this should be simple enough when not involving large data structures, and it also will result in a more legible output.

I do believe that it is reasonable to pass buffers to matchers when they're apart of large data structures such as objects or arrays which may prove difficult to read through each buffer.

[YetAnotherClown]

I'm keeping this PR as a draft for now as I don't believe snapshots work with these changes, or at the very least work as intended. If I am assuming correctly, Snapshots use Pretty Format. This would be an issue as the format only prints out the size and not the data, meaning any similar sized buffer would match unexpectedly.

I would need to find a way to print the buffer data using Pretty Format. It's not as simple as using buffer.tostring(), as it contains characters that cannot be parsed in json which has proved to break some tooling which isn't ideal.