feat(deck): Add pipewire config to use the noise-supression library used by upstream SteamOS

system_files/deck/etc/pipewire/99-input-denoising.conf

@@ -0,0 +1,33 @@
+context.modules = [
+{   name = libpipewire-module-filter-chain
+    args = {
+        node.description =  "Noise Canceling source"
+        media.name =  "Noise Canceling source"
+        filter.graph = {
+            nodes = [
+                {
+                    type = ladspa
+                    name = rnnoise
+                    plugin = /usr/lib64/ladspa/librnnoise_ladspa.so
+                    label = noise_suppressor_mono
+                    control = {
+                        "VAD Threshold (%)" = 50.0
+                        "VAD Grace Period (ms)" = 200
+                        "Retroactive VAD Grace (ms)" = 0
+                    }
+                }
+            ]
+        }
+        capture.props = {
+            node.name =  "capture.rnnoise_source"
+            node.passive = true
+            audio.rate = 48000
+        }
+        playback.props = {
+            node.name =  "rnnoise_source"
+            media.class = Audio/Source
+            audio.rate = 48000
+        }
+    }
+}
+]