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/GoogleSlides.test.ts

@@ -0,0 +1,29 @@
+import GoogleSlides from "./GoogleSlides";
+
+describe("GoogleSlides", () => {
+  const match = GoogleSlides.ENABLED[0];
+
+  test("to be enabled on share link", () => {
+    expect(
+      "https://docs.google.com/presentation/d/e/2PACX-1vTdddHPoZ5M_47wmSHCoigRIt2cj_Pd-kgtaNQY6H0Jzn0_CVGbxC1GcK5IoNzU615lzguexFwxasAW/pub?start=false&loop=false&delayms=3000".match(
+        match
+      )
+    ).toBeTruthy();
+    expect(
+      "https://docs.google.com/presentation/d/e/2PACX-1vTdddHPoZ5M_47wmSHCoigRIt2cj_Pd-kgtaNQY6H0Jzn0_CVGbxC1GcK5IoNzU615lzguexFwxasAW/pub".match(
+        match
+      )
+    ).toBeTruthy();
+    expect(
+      "https://docs.google.com/presentation/d/e/2PACX-1vTdddHPoZ5M_47wmSHCoigR/edit".match(
+        match
+      )
+    ).toBeTruthy();
+  });
+
+  test("to not be enabled elsewhere", () => {
+    expect("https://docs.google.com/presentation".match(match)).toBe(null);
+    expect("https://docs.google.com".match(match)).toBe(null);
+    expect("https://www.google.com".match(match)).toBe(null);
+  });
+});