Add bash completions file to .debs

[jidanni]

Enhancement request

It would be better if the .debs came with bash completions. Example:

$ dlocate ogr2ogr 
gdal-bin: /usr/bin/ogr2ogr
gdal-bin: /usr/share/man/man1/ogr2ogr.1.gz
gdal-bin: /usr/share/bash-completion/completions/ogr2ogr

[mcanouil]

@jidanni please do read the guidelines: https://github.com/quarto-dev/quarto-cli/issues/new/choose

Feature requests are to be made on discussions: https://github.com/orgs/quarto-dev/discussions/categories/feature-requests