refactor(helpers): separate functions into files (#667)

* refactor(helpers): separate functions into files

* idk

* idk

src/helpers/members/raw_avatar_url.ts

@@ -0,0 +1,16 @@
+import { ImageFormats, ImageSize } from "../../types/mod.ts";
+import { endpoints } from "../../util/constants.ts";
+import { formatImageURL } from "../../util/utils.ts";
+
+/** The users custom avatar or the default avatar if you don't have a member object. */
+export function rawAvatarURL(
+  userID: string,
+  discriminator: string,
+  avatar?: string | null,
+  size: ImageSize = 128,
+  format?: ImageFormats,
+) {
+  return avatar
+    ? formatImageURL(endpoints.USER_AVATAR(userID, avatar), size, format)
+    : endpoints.USER_DEFAULT_AVATAR(Number(discriminator) % 5);
+}