feat: add empty state key illustration to illustrationMap and claude instructions

[AbhishekA1509]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A
• Test B

Checklist

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas

[Copilot]

Pull request overview

This PR adds a new empty-state-key illustration to the illustrationMap in the Devtron frontend common library. The illustration appears to be a key icon used for empty states in the UI.

Changes:

• Added new SVG illustration file empty-state-key.svg to Assets/Illustration directory
• Auto-generated import and map entry in Illustration.tsx component
• Added comprehensive repository documentation in CLAUDE.md (unrelated to main PR purpose)

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/Shared/Components/Illustration/Illustration.tsx	Auto-generated import statement and illustrationMap entry for the new empty-state-key illustration
src/Assets/Illustration/empty-state-key.svg	New SVG illustration with embedded PNG image data representing a key icon
CLAUDE.md	New comprehensive documentation file for the repository (278 lines)

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The base branch was changed.