Adds pipeline editor link on root Ci config files

What does this MR do?

Adds Pipeline Editor button on root Ci config file so user can be taken to pipeline authoring section to work on their CI file. For this version, it only handle the case where :consolidated_edit_button feature flag is off.

Screenshots (strongly suggested)

Before	After

Does this MR meet the acceptance criteria?

Conformity

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• Documentation (if required)
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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

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