Divide large integration table into smaller sections

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What does this MR do and why?

This MR divides the large integration table into smaller sections by grouping similar integrations together

References

• #413161

Screenshots or screen recordings

Before	After (Screenshot is a preview from VSCode)

How to set up and validate locally

1. Visit https://docs.gitlab.com/user/project/integrations/#available-integrations

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.