Bump @roo-code/types to v1.26.0

[cte]

Description

Also added instructions.

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Important

Bump @roo-code/types to v1.26.0, add publishing instructions, and update clean script in webview-ui/package.json.

• Version Update:
  • Bump @roo-code/types version to 1.26.0 in package.json.
• Documentation:
  • Add README.md to packages/types with instructions for publishing to NPM.
• Scripts:
  • Modify clean script in webview-ui/package.json to remove ../src/webview-ui directory.

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