Initial pgindent and pgperltidy run for v14.

Also "make reformat-dat-files".

The only change worthy of note is that pgindent messed up the formatting
of launcher.c's struct LogicalRepWorkerId, which led me to notice that
that struct wasn't used at all anymore, so I just took it out.

src/bin/pg_test_fsync/pg_test_fsync.c

@@ -401,6 +401,7 @@ test_sync(int writes_per_op)
 							  buf,
 							  XLOG_BLCKSZ,
 							  writes * XLOG_BLCKSZ) != XLOG_BLCKSZ)
+
 					/*
 					 * This can generate write failures if the filesystem has
 					 * a large block size, e.g. 4k, and there is no support