feat: add latvian language support (#12363)

This PR adds Latvian language support, based on the instructions
provided in the documentation

Author: dt-globelaxy

packages/payload/src/exports/i18n/lv.ts

@@ -0,0 +1 @@
+export { lv } from '@payloadcms/translations/languages/lv'

packages/translations/src/exports/all.ts

@@ -20,6 +20,7 @@ import { it } from '../languages/it.js'
 import { ja } from '../languages/ja.js'
 import { ko } from '../languages/ko.js'
 import { lt } from '../languages/lt.js'
+import { lv } from '../languages/lv.js'
 import { my } from '../languages/my.js'
 import { nb } from '../languages/nb.js'
 import { nl } from '../languages/nl.js'
@@ -60,6 +61,7 @@ export const translations = {
   ja,
   ko,
   lt,
+  lv,
   my,
   nb,
   nl,