Update IDE group metrics

What does this MR do and why?

Updates the metrics that were formerly associated with groupeditor [DEPRECATED] and re-assigns them to the appropriate group.

Features related to the Web IDE, Live Preview, Web Terminal, Gitpod, Remote Development, workspaces, and GitLab Workflow VS Code Extension should be associated with group:ide.

Wiki events should be associated with stage: plan; group: knowledge

Snippets and Single File Editor ("sfe") edits should be associated with group: source_code

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

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