pgsql: Improve psql tab completion for options of subcriptions and publ

Improve psql tab completion for options of subcriptions and publications

The list of options provided by the tab completion was outdated for the
following commands:
- ALTER SUBSCRIPTION
- CREATE SUBSCRIPTION
- ALTER PUBLICATION
- CREATE PUBLICATION

Author: Vignesh C
Reviewed-by: Bharath Rupireddy
Discussion: https://postgr.es/m/CALDaNm18oHDFu6SFCHE=ZbiO153Fx7E-L1MG0YyScbaDV--U+A@...

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/d08237b5b494f96e72220bcef36a14a642969f16

Modified Files
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src/bin/psql/tab-complete.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)