Parsing comments for eval and clock time

[vladkvit]

Lichess and Chess.com PGNs are annotated with eval and clock like so:

1. e4 { [%eval 0.17] [%clk 0:00:30] } 1... c5 { [%eval 0.19] [%clk 0:00:30] }
2. Nf3 { [%eval 0.25] [%clk 0:00:29] } 2... Nc6 { [%eval 0.33] [%clk 0:00:30] }

Would there be interest in adding parsing for these values? I'm implementing this parsing either way (as I need it for my chess engine), but I thought it might be better to have the functionality as part of this library.

[vladkvit]

For reference, I ended up implementing it in my own project - see https://github.com/vladkvit/rust_pgn_reader_python_binding/blob/main/src/comment_parsing.rs