Add support for noise suppression on Linux using rnnoise.

This uses: https://github.com/werman/noise-suppression-for-voice .

ansible/roles/noise_suppression/tasks/peruser_linux.yaml

@@ -0,0 +1,21 @@
+- name: Create directories
+  file:
+    name: "{{ account_homedir.stdout }}/{{ item }}"
+    state: directory
+    mode: 0700
+    owner: "{{ account_name.stdout }}"
+    group: "{{ group_name.stdout }}"
+  loop:
+    # Could also use /etc/pipewire/pipewire.conf.d/ for system-wide config.
+    - ".config/pipewire/pipewire.conf.d"
+
+- name: Copy files
+  copy:
+    src: "files/{{ item.src }}"
+    dest: "{{ account_homedir.stdout }}/{{ item.dest }}"
+    mode: 0600
+    owner: "{{ account_name.stdout }}"
+    group: "{{ group_name.stdout }}"
+  loop:
+    - src: 99-input-denoising.conf
+      dest: .config/pipewire/pipewire.conf.d/