[Swift] Add allowReadingUnalignedBuffers to all ByteBuffer init methods

[abandy]

There was a recent updated that added allowReadingUnalignedBuffers to a subset of ByteBuffer init methods.

The init methods that were modified required the data to be UnsafeMutableRawPointer (AFAIK). Since unaligned is associated with reading and not writing it seems that all the other methods should not prevent a user from setting this parameter.

I would like to add allowReadingUnalignedBuffers to all ByteBuffer init methods that accept the data as an input.

[hassila]

Guess this one can be closed as the related PR was merged.

[mustiikhalil]

Yes correct