Add language links to switch between English and Spanish (#842)

* Add language links to gov banner

- align banners to site logo
- create Language component and snapshot test
- add Language component to GovBanner
- update namespace for betaBanner scss.d.ts file

* Update snapshots for each page

* Componentizes the GovBanner

- add styles
- add unit test
- token most styles to USWDS

* Add language icon and update snapshots

* Make language link text smaller

* Update total height of BetaBanner

* Add languageLink to scss.d.ts file

* Add language links to mobile

- add isDesktop prop to Language component
- refactors header links to a simple array
- update snapshots

* Add href value to language links

- update snapshots

* merge other PRs and add spanish links

- merge PR 817
- merge PR 794
- add spanish links for footer
- add diffEnEs.js to detect differences between two json files
- adds esNoBrackets.json
- update intl README

* Add government banner in spanish

* Add spanish content for About and Explore page

client/src/components/GovernmentBanner/GovernmentBanner.module.scss

@@ -0,0 +1,16 @@
+@use '../../styles/design-system.scss' as *;
+
+.fullScreenContainer {
+    background-color: #f0f0f0; // Non-tokenizable color
+    @include u-padding-top('05');
+    @include u-padding-bottom('05');
+
+    .bannerContainer {
+      @include u-display("flex");
+      max-width: 74rem; 
+      @include u-margin-left(auto);
+      @include u-margin-right(auto);
+      justify-content: space-between;
+    }
+    
+}