A4A > Migrations: Add event tracking

[yashwin]

Closes https://github.com/Automattic/automattic-for-agencies-dev/issues/1439

Proposed Changes

This PR adds the event tracking to the new migration changes.

Why are these changes being made?

• To be able to track the events.

Testing Instructions

• Open the A4A live link > Open the network tab on the browser dev tool > Filter Img and a8c-for-agencies-horizon text.

• Verify the below tracking events are being captured along with the props mentioned:

Migrations: Overview > Click the Tag sites for commission button

1. Select all/deselect all

Event: calypso_a8c_migrations_tag_sites_modal_select_all_sites_click
Props: type: select | deselect

2. Select/deselect one

Event: calypso_a8c_migrations_tag_sites_modal_select_site_click
Props: type: select | deselect

3. Cancel/Close modal

Event: calypso_a8c_migrations_tag_sites_modal_close

4. Add Sites

Event: calypso_a8c_migrations_tag_sites_modal_add_sites_click
Props: count

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-124623

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-124623&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-124623&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Sections (~86 bytes added 📈 [gzipped])

name                         parsed_size           gzip_size
a8c-for-agencies-migrations       +399 B  (+0.0%)      +86 B  (+0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[jkguidaven]

Overall looks good. I have one comment that I think we should include in the track event.