Map out data in `wpseoScriptData` to be able to refactor

[thijsoo]

We want to figure out how to map the script data in /admin/metabox/class-metabox.php and other classes used there to fill the wpseoScriptData field. And create a design to make this more OO

### Tasks
- [ ] Map out additional script data such as `wpseoAdminGlobalL10n` and `wpseoAdminL10n`
- [ ] https://github.com/Yoast/wordpress-seo/issues/21550
- [ ] https://github.com/Yoast/wordpress-seo/issues/21140
- [ ] https://github.com/Yoast/wordpress-seo/issues/21186
- [ ] https://github.com/Yoast/wordpress-seo/issues/21318
- [ ] https://github.com/Yoast/wordpress-seo/issues/21585
- [ ] https://github.com/Yoast/wordpress-seo/issues/21607
- [ ] https://github.com/Yoast/wordpress-seo/issues/21621
- [x] https://github.com/Yoast/wordpress-seo/issues/21584
- [ ] https://github.com/Yoast/wordpress-seo/issues/21365
- [ ] https://github.com/Yoast/wordpress-seo/issues/21580
- [ ] Remove duplicate isPremium from wpseoAdminGlobalL10n

[thijsoo]