feat: add Octolens enums and mention activity type (CM-1834)

[themarolt]

Summary

Foundational types for Octolens ingestion: connector-level platform enum and the shared
mention activity type across github/twitter/linkedin.

Changes

• PlatformType.OCTOLENS, IntegrationType.OCTOLENS
• mention activity type for GitHub and LinkedIn (Twitter already has it)

Type of change

• Bug fix
• New feature
• Refactor / cleanup
• Performance improvement
• Chore / dependency update
• Documentation

JIRA ticket

https://linuxfoundation.atlassian.net/browse/CM-1834

[cursor]

PR Summary

Low Risk
Type and display-metadata additions only; no runtime ingestion or auth changes in this diff.

Overview
Adds Octolens as a new PlatformType and IntegrationType, with label Octolens and a null profile URL fallback (same pattern as Git/Discourse).

Introduces a shared mention activity type for GitHub and LinkedIn: enum values, UI copy (“mentioned you on …”), sentiment scoring enabled, and engagement grid score 6 (aligned with comments on each platform). This extends the existing Twitter mention pattern for Octolens-driven mention ingestion.

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[Copilot]

Copilot review overview

🟢 Approval recommended

The enum, scoring, and activity-setting changes are complete and consistent with existing Twitter mention behavior.

Review effort: Balanced
Findings: None

What changed in this PR

Adds foundational Octolens platform/integration types and shared mention activities.

Changes:

• Adds Octolens enums, label, and profile fallback.
• Adds scored GitHub and LinkedIn mention activities.
• Adds default display and sentiment settings.

File	Description
services/​libs/​types/​src/​enums/​platforms.ts	Adds Octolens platform and integration types.
services/​libs/​integrations/​src/​integrations/​linkedin/​types.ts	Adds LinkedIn mention type.
services/​libs/​integrations/​src/​integrations/​linkedin/​grid.ts	Scores LinkedIn mentions.
services/​libs/​integrations/​src/​integrations/​github/​types.ts	Adds GitHub mention type.
services/​libs/​integrations/​src/​integrations/​github/​grid.ts	Scores GitHub mentions.
services/​libs/​integrations/​src/​integrations/​activityTypes.ts	Configures mention display and sentiment behavior.

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