[CHORE] add IOStats to all micropartition ops

[samster25]

• Makes IOStats required for micropatition ops that may be lazy and call tables_or_read, concat_or_read.
• Add annotations for all ops that call the methods above
• update iostats to use Cow<'static, str> since many of the strings we use is static.

[codecov]

Codecov Report

Merging #1584 (8064568) into main (b4467ad) will not change coverage.
Report is 1 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

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[jaychia]

Could be cool if eventually we have some kind of annotation like #[io_stats = "Table concatting lazy materialization"]

[samster25]

Could be cool if eventually we have some kind of annotation like #[io_stats = "Table concatting lazy materialization"]

I'll probably work on some viz tool that will show that :)