feat(format): implement resolution custom formats

- SD
- HD
- UHD

custom_formats/480p.yml

@@ -0,0 +1,15 @@
+name: 480p
+description: Standard definition resolution commonly used in DVD and early web video
+  content.
+tags:
+- Standard Definition
+- Web
+- Legacy
+- Resolution
+conditions:
+- name: 480p
+  negate: false
+  required: true
+  resolution: 480p
+  type: resolution
+tests: []