Document additional functionality (e.g. resolve_params, set_params)

[widal001]

          @widal001 I would love it if you could help me with documentation.

I feel like there is a lot of functionality that is not covered in the documentation.

For instance, here is the functionality from https://github.com/uriyyo/fastapi-pagination/blob/main/fastapi_pagination/api.py that is not covered at all:

• resolve_params
• create_page
• set_params
• set_page
• set_items_transformer
• pagination_ctx

These are the first things that come to my mind, I am sure that there is more to cover. It will be also great to improve existing docs.

Originally posted by @uriyyo in #265 (comment)

[widal001]

@uriyyo I created this to reference the work that I'll plan to do related to documentation. Feel free to assign this ticket to me and I'll create a PR that references this issue!

[uriyyo]

@widal001 Great, thank you so much!