Kefu Chai 926fe29ebd db: commitlog: add fmt::formatter for commitlog types ...

before this change, we rely on the default-generated fmt::formatter
created from operator<<, but fmt v10 dropped the default-generated
formatter.

in this change, we define formatters for

* db::commitlog::segment::cf_mark
* db::commitlog::segment_manager::named_file
* db::commitlog::segment_manager::dispose_mode
* db::commitlog::segment_manager::byte_flow<T>

please note, the formatter of `db::commitlog::segment` is not
included in this commit, as we are formatting it in the inline
definition of this class. so we cannot define the specialization
of `fmt::formatter` for this class before its callers -- we'd
either use `format_as()` provided by {fmt} v10, or use `fmt::streamed`.
either way, it's different from the theme of this commit, and we
will handle it in a separated commit.

Refs #13245

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes scylladb/scylladb#17792

2024-03-14 09:28:12 +02:00

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