refactor!: restructure and document configuration

shared/home-manager/scripts/create_feedback_sink.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+#
+# Load sinks
+#
+pactl load-module module-null-sink formats=pcm,float32le  sink_name=output        sink_properties=device.description="Output"
+pactl load-module module-null-sink formats=pcm,float32le sink_name=applications  sink_properties=device.description="Applications"
+
+#
+# Loopback audio to the correct places
+#
+
+# Application audio forwarded to microphone
+pactl load-module module-loopback latency_msec=25 source=applications.monitor sink=output
+# Microphone
+pactl load-module module-loopback latency_msec=25   source=rnnoise_source sink=output
+# Application audio forwarded to me
+pactl load-module module-loopback latency_msec=25  source=applications.monitor sink=alsa_output.usb-Burr-Brown_from_TI_USB_Audio_CODEC-00.pro-output-0

shared/home-manager/scripts/delete_feedback_sink.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+pactl unload-module module-loopback
+pactl unload-module module-null-sink

shared/home-manager/scripts/games/launch.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# I've removed all environment variables
+# but there might be useful ones in the future.
+# https://docs.mesa3d.org/envvars.html
+
+mangohud gamemoderun "$@"