feat(admin-sdk,admin-bundler,admin-shared,medusa): Restructure admin packages (#8988)

**What**
- Renames /admin-next -> /admin
- Renames @medusajs/admin-sdk -> @medusajs/admin-bundler
- Creates a new package called @medusajs/admin-sdk that will hold all tooling relevant to creating admin extensions. This is currently `defineRouteConfig` and `defineWidgetConfig`, but will eventually also export methods for adding custom fields, register translation, etc. 
  - cc: @shahednasser we should update the examples in the docs so these functions are imported from `@medusajs/admin-sdk`. People will also need to install the package in their project, as it's no longer a transient dependency.
  - cc: @olivermrbl we might want to publish a changelog when this is merged, as it is a breaking change, and will require people to import the `defineXConfig` from the new package instead of `@medusajs/admin-shared`.
- Updates CODEOWNERS so /admin packages does not require a review from the UI team.

packages/admin/dashboard/src/components/localization/localized-table-pagination/index.ts

@@ -0,0 +1 @@
+export * from "./localized-table-pagination"

packages/admin/dashboard/src/components/localization/localized-table-pagination/localized-table-pagination.tsx

@@ -0,0 +1,26 @@
+import { Table } from "@medusajs/ui"
+import { ComponentPropsWithoutRef, ElementRef, forwardRef } from "react"
+import { useTranslation } from "react-i18next"
+
+type LocalizedTablePaginationProps = Omit<
+  ComponentPropsWithoutRef<typeof Table.Pagination>,
+  "translations"
+>
+
+export const LocalizedTablePagination = forwardRef<
+  ElementRef<typeof Table.Pagination>,
+  LocalizedTablePaginationProps
+>((props, ref) => {
+  const { t } = useTranslation()
+
+  const translations = {
+    of: t("general.of"),
+    results: t("general.results"),
+    pages: t("general.pages"),
+    prev: t("general.prev"),
+    next: t("general.next"),
+  }
+
+  return <Table.Pagination {...props} translations={translations} ref={ref} />
+})
+LocalizedTablePagination.displayName = "LocalizedTablePagination"