Buffer should support split, split_to and split_off

[Xuanwo]

Buffer doesn't provide split related API makes it hard to use.

[hanxuanliang]

I feel that this is a good opportunity to delve into OpenDAL. May I give this issue a try?

[hanxuanliang]

Is the buffer here referring to the opendal::Buffer within the core?

buffer.rs

[Xuanwo]

I feel that this is a good opportunity to delve into OpenDAL. May I give this issue a try?

Welcome, and thanks in advance!

Is the buffer here referring to the opendal::Buffer within the core?

Yes.