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/GoogleDrive.test.ts

@@ -0,0 +1,29 @@
+import GoogleDrive from "./GoogleDrive";
+
+describe("GoogleDrive", () => {
+  const match = GoogleDrive.ENABLED[0];
+
+  test("to be enabled on share link", () => {
+    expect(
+      "https://drive.google.com/file/d/1ohkOgmE8MiNx68u6ynBfYkgjeKu_x3ZK/view?usp=sharing".match(
+        match
+      )
+    ).toBeTruthy();
+    expect(
+      "https://drive.google.com/file/d/1ohkOgmE8MiNx68u6ynBfYkgjeKu_x3ZK/preview?usp=sharing".match(
+        match
+      )
+    ).toBeTruthy();
+    expect(
+      "https://drive.google.com/file/d/1ohkOgmE8MiNx68u6ynBfYkgjeKu_x3ZK/preview?usp=sharing&resourceKey=BG8k4dEt1p2gisnVdlaSpA".match(
+        match
+      )
+    ).toBeTruthy();
+  });
+
+  test("to not be enabled elsewhere", () => {
+    expect("https://drive.google.com/file".match(match)).toBe(null);
+    expect("https://drive.google.com".match(match)).toBe(null);
+    expect("https://www.google.com".match(match)).toBe(null);
+  });
+});