feat: Add optional prefetch hint for parsing Puffin Footer

[jonathanc-n]

Which issue does this PR close?

• Closes #1198.

What changes are included in this PR?

Add prefetch hint for parsing puffin footer + change some docs

Are these changes tested?

Yes, unit tested

[jonathanc-n]

cc @Xuanwo @fqaiser94

[Xuanwo]

Hi, I believe this hint should be optional and we shouldn't require all users to provide it.

[jonathanc-n]

@Xuanwo It is optional, let me change the title. Or do you mean that i should add a function like with_prefetch_hint and have the hint be in the struct?

[Xuanwo]

Or do you mean that i should add a function like with_prefetch_hint and have the hint be in the struct?

Yep. I believe we should not change the read API.

[jonathanc-n]

@Xuanwo Thanks for the review, it is fixed!