wip: simple hubspot script injection DEV-274

[Akuukis]

🗒️ Checklist

1. run linter locally
2. update all related docs (API, README, inline, etc.), if any
3. draft PR with a title <type>(<scope>)<!>: <title> TASK-1234
4. tag PR: at least frontend or backend unless it's global
5. fill in the template below and delete template comments
6. review thyself: read the diff and repro the preview as written
7. open PR & confirm that CI passes
8. request reviewers, if needed
9. delete this section before merging

💭 Notes

For testing Hubspot in a test server

👀 Preview steps

1. Open website & login
2. if necessary, disable adblocks
3. 🟢 [on PR] notice that hubspot is being called in the network tab
4. 🟢 [on PR] notice that hubspot bubble is at the bottom right corner