Add created by me filter

[Mbeaulne]

Description

Added a new CreatedByFilter component that allows filtering content by creator. The component includes:

• A toggle switch for "Created by me" functionality
• A search input for filtering by specific usernames
• Comprehensive test coverage for all component behaviors

Type of Change

• New feature
• Documentation update

Checklist

• I have tested this does not break current pipelines / runs functionality
• I have tested the changes on staging

Screenshots (if applicable)

The component renders a toggle switch with "Created by me" label and a search input with a search button

Test Instructions

1. Toggle the switch to filter by current user
2. Enter a username in the search field and click "Search" to filter by specific user
3. Verify the component correctly displays the current filter state

Additional Comments

The component supports two main use cases:

• Quick filtering by current user with the toggle
• Specific user filtering with the search input
• The value can be undefined (no filter), "me" (current user), or any username

[Mbeaulne]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Filter Bar #1708 : 2 dependent PRs (#1709 , #1711 )
• Add created by me filter #1713 👈 (View in Graphite)
• Status filter #1707
• Annotation Filter input #1706
• Date picker #1705
• Add useRunSearchParams hook for pipeline run filtering #1704
• master

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