* feat: bracketed paste
This introduces support for input via bracketed paste, where escape
characters in the pasted input are not interpreted.
Pasted input are marked as a special field in the KeyMsg. This is
useful because pasted input may need sanitation in individual widgets.
* fix(key): support bracketed paste with short reads
Some terminal emulators feed the bracketed paste data in multiple
chunks, which may not be aligned on a 256 byte boundary. So it's
possible for `input.Read` to return less than 256 bytes read
but while there's still more data to be read to complete a bracketed
paste input.
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Co-authored-by: Christian Muehlhaeuser <muesli@gmail.com>
Raphael 'kena' Poss