[lldb] Drop support for the Buffer Protocol (#168144)
This is an alternative solution to the issue described in #167990, which
can be summarized as that we cannot target Python 3.8 with the stable
API and support building for Python 3.13 and later due to the buffer
protocol.
The approach taken in this PR, and proposed by Ismail, is to sidesteps
the issue by dropping support for the buffer protocol. The only two
users are SBFile::Read and SBFile::Write. Instead, we support PyBytes
and PyByteArray which are the builtin types that conform to the buffer
protocol. Technically, this means a small regression, where those
methods could previously take custom types that conform to Python's
buffer protocol. Like Ismail, I think this is acceptable given the
alternatives.
Co-authored-by: Med Ismail Bennani <ismail@bennani.ma>
