Restructure modules/shared and update all imports

- Rename modules/hosts/common to modules/shared
- Split shared into home/general, home/linux, and nixos subdirectories
- Update all import paths in lib/ and modules/hosts/
- Fix hardcoded /Users/ path to use config.home.homeDirectory
- Update .sops.yaml path for secrets

modules/shared/nixos/ripping.nix

@@ -0,0 +1,23 @@
+{ pkgs, ... }: {
+  # Be sure this is added if on NixOS
+  # boot.kernelModules = [ "sg" ];
+
+  # Also, get KEYDB.cfg per https://wiki.archlinux.org/title/Blu-ray
+
+  environment.systemPackages = with pkgs; [
+    abcde
+    asunder
+    handbrake
+    lame
+    libaacs
+    libbdplus
+    libbluray
+    libdvdcss
+    libdvdnav
+    libdvdread
+    makemkv
+    mkvtoolnix
+    mkvtoolnix-cli
+  ];
+}
+