support for customized page-size options for paginator

[FabLax]

Prerequisites

• I have read the Contributing Guidelines.
• I have not leaked any internal/restricted information like screenshots, videos, code snippets, links etc.

Suggestion / feature request

Currently the advanced paginator (ix-pagination) always shows all options for page size (10, 15, 20, 40, 100) but in some cases i want a custom page size, or if that does not align with ix guidelines, i at least want to restrict the options to e.g. only allow 15 and 20 as page size, or only one fixed page size

In our case the backend takes too long if loading more than 20 items, thats why we want to restrict the selection. But still want to show the page size dropdown to 1. show the current page size and 2. to have a similar look and feel as other views with paginator

[github-actions]

🤖 Hello @FabLax

Your issue will be analyzed and is part of our internal workflow.
To get informed about our workflow please checkout the Contributing Guidelines

JIRA: IX-3212

[itushardGIt]

@FabLax : Thanks for putting this enhancement.
@kathrinschalber : For data Lake web component feature, we are also using Advance pagination and need custom page size like 50, 100, 300, 500.

Can we plan this enhancement in upcoming release, this will helps us?

[github-actions]

This issue is labeled as Contribution welcome 👨‍💻 and is open for community contributions. The IX team has reviewed it and accepted it, though it doesn't have a set priority yet.
If you'd like to work on this, please leave a comment here to indicate your intention to submit a pull request. This will help us coordinate and ensure there's no duplicated effort.

Thanks for your contribution!