Added audio upload support to Media API

refs https://github.com/TryGhost/Toolbox/issues/95
refs 4907b7bf1e

- We need support for audio media uploads to be able to used them in cards. The new supported formats are .mp4 and .wav
- Example source files downloaded from https://filesamples.com/

core/shared/config/overrides.json

@@ -31,8 +31,8 @@
             "contentTypes": ["image/jpeg", "image/png", "image/gif", "image/svg+xml", "image/x-icon", "image/vnd.microsoft.icon", "image/webp"]
         },
         "media": {
-            "extensions": [".mp4",".webm", ".ogv"],
-            "contentTypes": ["video/mp4", "video/webm", "video/ogg"]
+            "extensions": [".mp4",".webm", ".ogv", ".mp3", ".wav"],
+            "contentTypes": ["video/mp4", "video/webm", "video/ogg", "audio/mpeg", "audio/vnd.wav"]
         },
         "thumbnails": {
             "extensions": [".jpg", ".jpeg", ".gif", ".png", ".svg", ".svgz", ".ico", ".webp"],

test/e2e-api/admin/media.test.js

@@ -74,6 +74,20 @@ describe('Media API', function () {
             media.push(res.body.media[0].url.replace(config.get('url'), ''));
         });
 
+        it('Can upload an mp3', async function () {
+            const res = await request.post(localUtils.API.getApiQuery('media/upload'))
+                .set('Origin', config.get('url'))
+                .expect('Content-Type', /json/)
+                .field('ref', 'audio_file_123')
+                .attach('file', path.join(__dirname, '/../../utils/fixtures/media/sample.mp3'))
+                .expect(201);
+
+            res.body.media[0].url.should.match(new RegExp(`${config.get('url')}/content/media/\\d+/\\d+/sample.mp3`));
+            res.body.media[0].ref.should.equal('audio_file_123');
+
+            media.push(res.body.media[0].url.replace(config.get('url'), ''));
+        });
+
         it('Rejects non-media file type', async function () {
             const res = await request.post(localUtils.API.getApiQuery('media/upload'))
                 .set('Origin', config.get('url'))