feat: create route to fetch stream URL from provider

Summary:

Test Plan:

src/controllers/episodes/getEpisodeUrl/anify.ts

@@ -0,0 +1,74 @@
+import { sortByProperty } from "~/libs/sortByProperty";
+
+import {
+  audioPriority,
+  qualityPriority,
+  subtitlesPriority,
+} from "./priorities";
+import type { FetchUrlResponse } from "./responseType";
+
+export async function getSourcesFromAnify(
+  provider: string,
+  watchId: string,
+  aniListId: number,
+): Promise<FetchUrlResponse | null> {
+  const response = await fetch("https://api.anify.tv/sources", {
+    body: JSON.stringify({
+      watchId,
+      providerId: provider,
+      episodeNumber: "1",
+      id: aniListId.toString(),
+      subType: "sub",
+    }),
+    method: "POST",
+  }).then((res) => res.json() as Promise<AnifySourcesResponse>);
+  const { sources, subtitles, audio, intro, outro, headers } = response;
+
+  if (!sources || sources.length === 0) {
+    return null;
+  }
+
+  const source = sources.sort(sortByProperty(qualityPriority, "quality"))[0]
+    ?.url;
+  subtitles?.sort(sortByProperty(subtitlesPriority, "lang"));
+  audio?.sort(sortByProperty(audioPriority, "lang"));
+
+  return {
+    source,
+    audio,
+    subtitles,
+    intro:
+      typeof intro?.start === "number" && typeof intro?.end === "number"
+        ? [intro.start, intro.end].map((seconds) => Math.floor(seconds))
+        : undefined,
+    outro:
+      typeof outro?.start === "number" && typeof outro?.end === "number"
+        ? [outro.start, outro.end].map((seconds) => Math.floor(seconds))
+        : undefined,
+    headers: Object.keys(headers ?? {}).length > 0 ? headers : undefined,
+  };
+}
+
+interface AnifySourcesResponse {
+  sources: VideoSource[];
+  subtitles: LanguageSource[];
+  audio: LanguageSource[];
+  intro: SkipTime;
+  outro: SkipTime;
+  headers?: Record<string, string>;
+}
+
+interface SkipTime {
+  start: number;
+  end: number;
+}
+
+interface VideoSource {
+  url: string;
+  quality: string;
+}
+
+interface LanguageSource {
+  url: string;
+  lang: string;
+}