pgsql: file_fdw: Add on_error and log_verbosity options to file_fdw.

file_fdw: Add on_error and log_verbosity options to file_fdw.

In v17, the on_error and log_verbosity options were introduced for
the COPY command. This commit extends support for these options
to file_fdw.

Setting on_error = 'ignore' for a file_fdw foreign table allows users
to query it without errors, even when the input file contains
malformed rows, by skipping the problematic rows.

Both on_error and log_verbosity options apply to SELECT and ANALYZE
operations on file_fdw foreign tables.

Author: Atsushi Torikoshi
Reviewed-by: Masahiko Sawada, Fujii Masao
Discussion: https://postgr.es/m/ab59dad10490ea3734cf022b16c24cfd@oss.nttdata.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/a1c4c8a9e1e3a53996dafa1f4ee6d4f7de2c58b2

Modified Files
--------------
contrib/file_fdw/expected/file_fdw.out | 19 ++++++
contrib/file_fdw/file_fdw.c | 107 ++++++++++++++++++++++++++++-----
contrib/file_fdw/sql/file_fdw.sql | 7 +++
doc/src/sgml/file-fdw.sgml | 23 +++++++
4 files changed, 140 insertions(+), 16 deletions(-)