Added support for Lenovo Legion Slim 5 (16APH8)

Added PPD after researching the Framework laptops with AMD 7000 series

lenovo/legion/16aph8/README.md

@@ -0,0 +1,38 @@
+I was unable to get the hybrid settings working well with lightdm or sddm, but Optimus Sync
+mode seems to work the best for me.
+
+I am running the Linux 6.6 LTS kernel with KDE + SDDM, and it seems to be working well.
+
+## hardware-configuration.nix
+
+I have the following customizations added for my nvidia drivers.
+
+```
+hardware.nvidia = {
+    nvidiaSettings = true;
+    package = config.boot.kernelPackages.nvidiaPackages.stable;
+};
+```
+
+## Setup at the time of testing
+
+### nix-info
+```
+$ nix-info -m
+ - system: `"x86_64-linux"`
+ - host os: `Linux 6.1.68, NixOS, 23.11 (Tapir), 23.11.20231220.d65bcea`
+ - multi-user?: `yes`
+ - sandbox: `yes`
+ - version: `nix-env (Nix) 2.18.1`
+ - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`
+```
+
+### lspci
+```
+$ lspci
+...
+01:00.0 VGA compatible controller: NVIDIA Corporation AD107M [GeForce RTX 4060 Max-Q / Mobile] (rev a1)
+...
+05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Phoenix1 (rev c2)
+...
+```