Add age ratings (#451)

* Base age rating system

* Cleanup enum leftovers

* Missed files

* GB importer

* Linter settings

* Translations

* Prettier and linting

---------

Co-authored-by: Robert Clabough <robert@clabough.tech>

server/utils/ageRatings.ts

@@ -0,0 +1,80 @@
+import { AgeRatingOrganization } from "~/prisma/client/enums";
+
+/**
+ * This file will live as the known ratings that come from various sources. Each source reports a bit differently, the goal
+ * will be to normalize to these ratings. Admins of course can override and set a separate rating if needed.
+ *
+ * These will change, but historically very infrequently.
+ */
+
+export const ESRBRating = {
+  EC: "EC",
+  E: "E",
+  E10: "E10",
+  T: "T",
+  M: "M",
+  AO: "AO",
+} as const;
+
+export const PEGIRating = {
+  "3": "3",
+  "7": "7",
+  "12": "12",
+  "16": "16",
+  "18": "18",
+} as const;
+
+export const CEROrating = {
+  A: "A",
+  B: "B",
+  C: "C",
+  D: "D",
+  Z: "Z",
+} as const;
+
+export const USKRating = {
+  "0": "0",
+  "6": "6",
+  "12": "12",
+  "16": "16",
+  "18": "18",
+} as const;
+
+export const GRACRating = {
+  ALL: "ALL",
+  "12": "12",
+  "15": "15",
+  "18": "18",
+} as const;
+
+export const ClassIndRating = {
+  L: "L",
+  "10": "10",
+  "12": "12",
+  "14": "14",
+  "16": "16",
+  "18": "18",
+} as const;
+
+export const ACBRating = {
+  G: "G",
+  PG: "PG",
+  M: "M",
+  MA15: "MA15",
+  R18: "R18",
+  RC: "RC",
+} as const;
+
+export const RATINGS_FOR_ORGANIZATION = {
+  [AgeRatingOrganization.ESRB]: ESRBRating,
+  [AgeRatingOrganization.PEGI]: PEGIRating,
+  [AgeRatingOrganization.CERO]: CEROrating,
+  [AgeRatingOrganization.USK]: USKRating,
+  [AgeRatingOrganization.GRAC]: GRACRating,
+  [AgeRatingOrganization.ClassInd]: ClassIndRating,
+  [AgeRatingOrganization.ACB]: ACBRating,
+} as const satisfies Record<AgeRatingOrganization, Record<string, string>>;
+
+export function getAvailableRatings(org: AgeRatingOrganization): string[] {
+  return Object.values(RATINGS_FOR_ORGANIZATION[org]);
+}