Add bilibili Embed Service (#2550)

* feat: Add bilibili Embed Service

* chore: code format

* chore: update bilibili icon

shared/embeds/Bilibili.test.js

@@ -0,0 +1,23 @@
+/* eslint-disable flowtype/require-valid-file-annotation */
+import Bilibili from "./Bilibili";
+
+describe("Bilibili", () => {
+  const match = Bilibili.ENABLED[0];
+  test("to be enabled on video link", () => {
+    expect(
+      "https://www.bilibili.com/video/BV1CV411s7jd?spm_id_from=333.999.0.0".match(
+        match
+      )
+    ).toBeTruthy();
+  });
+
+  test("to not be enabled elsewhere", () => {
+    expect("https://youtu.be".match(match)).toBe(null);
+    expect("https://bilibili.com".match(match)).toBe(null);
+    expect("https://www.bilibili.com".match(match)).toBe(null);
+    expect("https://www.bilibili.com/logout".match(match)).toBe(null);
+    expect("https://www.bilibili.com/feed/subscriptions".match(match)).toBe(
+      null
+    );
+  });
+});