fix(server): add missing avi mime types and add tests (#3001)

See https://github.com/immich-app/immich/pull/2952#pullrequestreview-1497194041

Fixes: #2975

server/src/domain/domain.constant.spec.ts

@@ -0,0 +1,21 @@
+import { validMimeTypes } from './domain.constant';
+
+describe('valid mime types', () => {
+  it('should be a sorted list', () => {
+    expect(validMimeTypes).toEqual(validMimeTypes.sort());
+  });
+
+  it('should contain only unique values', () => {
+    expect(validMimeTypes).toEqual([...new Set(validMimeTypes)]);
+  });
+
+  it('should contain only image or video mime types', () => {
+    expect(validMimeTypes).toEqual(
+      validMimeTypes.filter((mimeType) => mimeType.startsWith('image/') || mimeType.startsWith('video/')),
+    );
+  });
+
+  it('should contain only lowercase mime types', () => {
+    expect(validMimeTypes).toEqual(validMimeTypes.map((mimeType) => mimeType.toLowerCase()));
+  });
+});