feat(server): Support webm videos (#1365)

* feat(server): Support webm without transcoding.

Transcoding result doesn't appear to be used by anything expect for quicktime.

* feat(server): Fix the asset uploader for .avi

It needs to be transcoded.

* feat(server): Most browsers doesn't support avi so use mp4.

* feat(server): Address PR comments

* Addressed the PR comments

I moved the function that checks the mimetype to a central location in asset-utils and made tests for it.

* Rollbacked to the way transcoder was decising things to transcode.

server/libs/common/src/utils/asset-utils.spec.ts

@@ -0,0 +1,20 @@
+import { assetUtils } from './asset-utils';
+
+describe('Asset Utilities', () => {
+  describe('isWebPlayable', () => {
+    it('Check that it returns true with mimetype webm', () => {
+      const result = assetUtils.isWebPlayable('video/webm');
+      expect(result).toBeTruthy();
+    });
+
+    it('Check that returns true with mimetype mp4', () => {
+      const result = assetUtils.isWebPlayable('video/mp4');
+      expect(result).toBeTruthy();
+    });
+
+    it('Check that returns false with mimetype quicktime', () => {
+      const result = assetUtils.isWebPlayable('video/quicktime');
+      expect(result).toBeFalsy();
+    });
+  });
+});