Clear Up Scala Warnings

[rupertbates]

What are you doing in this PR?

We have built up quite a lot of warnings in our code base over time, this PR aims to remove as many of those as possible without major code changes. Changes made are:

• Add ScalaFix plugin into the project, this does automated fixes of a number of common code issues
• Add explicit types to public members and all implicits (this is the vast majority of the changes)
• Remove redundant braces

Tested successfully on CODE

[github-actions]

Deploy build 11556 of support::stripe-patrons-data to CODE

All deployment options

• Deploy build 11556 of support::stripe-patrons-data to CODE
• Deploy parts of build 11556 to CODE by previewing it first
• What's on CODE right now?

---

From guardian/actions-riff-raff.

[github-actions]

Size Change: 0 B

Total Size: 2.32 MB

ℹ️ View Unchanged

Filename	Size
./public/compiled-assets/javascripts/[countryGroupId]/events/router.js	114 kB
./public/compiled-assets/javascripts/[countryGroupId]/router.js	260 kB
./public/compiled-assets/javascripts/ausMomentMap.js	109 kB
./public/compiled-assets/javascripts/contributionsRedirectStyles.js	20 B
./public/compiled-assets/javascripts/digitalSubscriptionLandingPage.js	244 kB
./public/compiled-assets/javascripts/downForMaintenancePage.js	71.4 kB
./public/compiled-assets/javascripts/error404Page.js	71.4 kB
./public/compiled-assets/javascripts/error500Page.js	71.3 kB
./public/compiled-assets/javascripts/favicons.js	617 B
./public/compiled-assets/javascripts/paperSubscriptionCheckoutPage.js	198 kB
./public/compiled-assets/javascripts/paperSubscriptionLandingPage.js	87.8 kB
./public/compiled-assets/javascripts/payPalErrorPage.js	69.8 kB
./public/compiled-assets/javascripts/payPalErrorPageStyles.js	20 B
./public/compiled-assets/javascripts/promotionTerms.js	74.4 kB
./public/compiled-assets/javascripts/subscriptionsLandingPage.js	73.5 kB
./public/compiled-assets/javascripts/subscriptionsRedemptionPage.js	128 kB
./public/compiled-assets/javascripts/supporterPlusLandingPage.js	313 kB
./public/compiled-assets/javascripts/unsupportedBrowserStyles.js	20 B
./public/compiled-assets/javascripts/weeklySubscriptionCheckoutPage.js	195 kB
./public/compiled-assets/javascripts/weeklySubscriptionLandingPage.js	87.9 kB
./public/compiled-assets/webpack/136.js	2.17 kB
./public/compiled-assets/webpack/187.js	21.5 kB
./public/compiled-assets/webpack/27.js	22.6 kB
./public/compiled-assets/webpack/344.js	2.04 kB
./public/compiled-assets/webpack/706.js	107 kB

_{compressed-size-action}

[github-actions]

Deploy build 20820 of support:support-workers-mono to CODE

All deployment options

• Deploy build 20820 of support:support-workers-mono to CODE
• Deploy parts of build 20820 to CODE by previewing it first
• What's on CODE right now?

---

From guardian/actions-riff-raff.