chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

shared/embeds/Spotify.test.ts

@@ -0,0 +1,27 @@
+import Spotify from "./Spotify";
+
+describe("Spotify", () => {
+  const match = Spotify.ENABLED[0];
+
+  test("to be enabled on song link", () => {
+    expect(
+      "https://open.spotify.com/track/29G1ScCUhgjgI0H72qN4DE?si=DxjEUxV2Tjmk6pSVckPDRg".match(
+        match
+      )
+    ).toBeTruthy();
+  });
+
+  test("to be enabled on playlist link", () => {
+    expect(
+      "https://open.spotify.com/user/spotify/playlist/29G1ScCUhgjgI0H72qN4DE?si=DxjEUxV2Tjmk6pSVckPDRg".match(
+        match
+      )
+    ).toBeTruthy();
+  });
+
+  test("to not be enabled elsewhere", () => {
+    expect("https://spotify.com".match(match)).toBe(null);
+    expect("https://open.spotify.com".match(match)).toBe(null);
+    expect("https://www.spotify.com".match(match)).toBe(null);
+  });
+});