build-aux: Add RNNoise Flatpak module

Replace in-tree RNNoise with a module with the same version as macOS
obs-deps

build-aux/com.obsproject.Studio.json

@@ -60,6 +60,7 @@
         "modules/50-libqrcodegencpp.json",
         "modules/50-ntv2.json",
         "modules/50-pipewire.json",
+        "modules/50-rnnoise.json",
         "modules/50-swig.json",
         "modules/50-v4l-utils.json",
         "modules/90-asio.json",

build-aux/modules/50-rnnoise.json

@@ -0,0 +1,21 @@
+{
+    "name": "rnnoise",
+    "config-opts": [
+        "--enable-shared",
+        "-C",
+        "--disable-dependency-tracking",
+        "--disable-doc",
+        "--disable-examples"
+    ],
+    "cleanup": [
+        "/include",
+        "/lib/pkgconfig"
+    ],
+    "sources": [
+        {
+            "type": "git",
+            "url": "https://github.com/xiph/rnnoise.git",
+            "commit": "085d8f484af6141b1b88281a4043fb9215cead01"
+        }
+    ]
+}