feat: render hogql insights as a big number

[aspicer]

Problem

https://posthog.com/questions/is-it-possible-to-render-a-hogql-insight-as-a-number-in-a-dashboard-instead-of-a-row

People want to write custom queries for dashboards and display them as a big number.

Changes

If you select "Single Value" in the dropdown, we display the first result returned from a SQL query as a Big Number.

Does this work well for both Cloud and self-hosted?

No Impact

How did you test this code?

Tested manually

[github-actions[bot]]

Size Change: 0 B

Total Size: 1.05 MB

ℹ️ View Unchanged

Filename	Size
frontend/dist/toolbar.js	1.05 MB

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[posthog-bot]

📸 UI snapshots have been updated

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[posthog-bot]

📸 UI snapshots have been updated

1 snapshot changes in total. 0 added, 1 modified, 0 deleted:

• chromium: 0 added, 1 modified, 0 deleted (diff for shard 2)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.