Add Audio Session and MSE registry/registrations

Via #1008

All specs are developed/maintained by the Media WG.

specs.json

@@ -413,6 +413,7 @@
   "https://tc39.es/proposal-temporal/",
   "https://testutils.spec.whatwg.org/",
   "https://url.spec.whatwg.org/",
+  "https://w3c.github.io/audio-session/",
   "https://w3c.github.io/contentEditable/",
   "https://w3c.github.io/gamepad/extensions.html",
   "https://w3c.github.io/mathml-aam/",
@@ -1052,6 +1053,11 @@
   },
   "https://www.w3.org/TR/mixed-content/",
   "https://www.w3.org/TR/motion-1/",
+  "https://www.w3.org/TR/mse-byte-stream-format-isobmff/",
+  "https://www.w3.org/TR/mse-byte-stream-format-mp2t/",
+  "https://www.w3.org/TR/mse-byte-stream-format-mpeg-audio/",
+  "https://www.w3.org/TR/mse-byte-stream-format-registry/",
+  "https://www.w3.org/TR/mse-byte-stream-format-webm/",
   "https://www.w3.org/TR/mst-content-hint/",
   {
     "url": "https://www.w3.org/TR/n-quads/",

src/data/ignore.json

@@ -161,6 +161,9 @@
     "w3c/publ-epub-revision": {
       "comment": "not targeting browsers but epub readers"
     },
+    "WICG/audio-focus": {
+      "comment": "moved to w3c/audio-session"
+    },
     "WICG/controls-list": {
       "comment": "aimed toward HTML LS  https://github.com/whatwg/html/pull/2426"
     },

src/data/monitor.json

@@ -12,10 +12,6 @@
       "comment": "no spec yet",
       "lastreviewed": "2023-07-01"
     },
-    "WICG/audio-focus": {
-      "comment": "only an explainer",
-      "lastreviewed": "2023-07-01"
-    },
     "WICG/file-handling": {
       "comment": "only points to explainer",
       "lastreviewed": "2023-07-01"