add pagination to datasets

[merobi-hub]

Problem

Pagination would make viewing datasets in namespaces with many datasets more manageable, as in the case of events. But currently datasets are not paginated.

Solution

This paginates the datasets route in the same way events are paginated.

Note: All database schema changes require discussion. Please link the issue for context.

One-line summary: adds pagination to datasets

Checklist

• You've signed-off your work
• Your changes are accompanied by tests (if relevant)
• Your change contains a small diff and is self-contained
• You've updated any relevant documentation (if relevant)
• You've included a one-line summary of your change for the CHANGELOG.md (Depending on the change, this may not be necessary).
• You've versioned your .sql database schema migration according to Flyway's naming convention (if relevant)
• You've included a header in any source code files (if relevant)

[codecov]

Codecov Report

Merging #2512 (1f7fa8a) into main (b62cee3) will not change coverage.
The diff coverage is n/a.

❗ Current head 1f7fa8a differs from pull request most recent head 2071c90. Consider uploading reports for the commit 2071c90 to get more accurate results

@@            Coverage Diff            @@
##               main    #2512   +/-   ##
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  Coverage     83.80%   83.80%           
  Complexity     1233     1233           
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  Files           235      235           
  Lines          5625     5625           
  Branches        270      270           
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  Hits           4714     4714           
  Misses          767      767           
  Partials        144      144           

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[phixMe]

I would declare this as a const outside of the component like

const PAGE_SIZE = 20

[merobi-hub]

@phixMe that fixed the issue. Thank you.