feat(embedded): +2 functions: getDashboardPermalink, getActiveTabs

[jayakrishnankk]

Added 2 more functions in embedded superset: getDashboardPermalinkForAnchor, getActiveTabs

SUMMARY

Ability to request the following information from the parent app to embedded superset

• Get active tabs
• Get dashboard permalink by anchor (example of an anchor - a chart id, for example CHART-a4qv8d)

TESTING INSTRUCTIONS

Embed dashboard using embedded sdk Make calls to get active tabs Make calls to get a chart permalink

ADDITIONAL INFORMATION

• [ ] Has associated issue:
• [x] Required feature flags: EMBEDDED_SUPERSET = True
• [ ] Changes UI
• [ ] Includes DB Migration (follow approval process in SIP-59)
  • [ ] Migration is atomic, supports rollback & is backwards-compatible
  • [ ] Confirm DB migration upgrade and downgrade tested
  • [ ] Runtime estimates and downtime expectations provided
• [x] Introduces new feature or API
• [ ] Removes existing feature or API