Add feature report for branch routes

[lfdebrux]

What problem does this pull request solve?

Trello card: https://trello.com/c/moEwoMm8/2242-add-usage-report-for-branching-feature

This PR adds a feature report for how many live forms are using secondary skip routes (and therefore branch routing).

It also changes the format of tables when looking at forms with routes to include the number of branch routes as well as the overall number of routes.

This PR is based off of #1970 to reduce the amount of changes needed.

Things to consider when reviewing

• Ensure that you consider the wider context.
• Does it work when run on your machine?
• Is it clear what the code is doing?
• Do the commit messages explain why the changes were made?
• Are there all the unit tests needed?
• Do the end to end tests need updating before these changes will pass?
• Has all relevant documentation been updated?

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
11.7% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

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[lfdebrux]

This is superseded by #1992 .