Lenovo Legion 16achg6 support (#796)

lenovo/legion/16achg6/README.md

@@ -0,0 +1,21 @@
+I personally use my laptop with an external display attached. In `hybrid` config it works nice only with Wayland, while X11 can't detect the external monitor. Everything works as expected in `nvidia` mode, but battery life is reduced then.
+
+## Setup at the time of testing
+```
+$ nix-info -m
+ - system: `"x86_64-linux"`
+ - host os: `Linux 6.1.62, NixOS, 23.05 (Stoat), 23.05.20231116.9fb1225`
+ - multi-user?: `yes`
+ - sandbox: `yes`
+ - version: `nix-env (Nix) 2.13.6`
+ - channels(beko): `"home-manager-23.05.tar.gz"`
+ - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`
+ ```
+ ```
+ $ lspci
+...
+01:00.0 VGA compatible controller: NVIDIA Corporation GA104M [GeForce RTX 3070 Mobile / Max-Q] (rev a1)
+...
+05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] (rev c5)
+...
+```

lenovo/legion/16achg6/hybrid/default.nix

@@ -0,0 +1,26 @@
+{ lib, config, ... }:
+
+{
+  imports = [
+    ../../../../common/cpu/amd
+    ../../../../common/cpu/amd/pstate.nix
+    ../../../../common/gpu/amd
+    ../../../../common/gpu/nvidia/prime.nix
+    ../../../../common/pc/laptop
+    ../../../../common/pc/laptop/ssd
+  ];
+
+  services.xserver.videoDrivers = [ "nvidia" "amdgpu" ];
+
+  hardware = {
+    nvidia = {
+      modesetting.enable = lib.mkDefault true;
+      powerManagement.enable = lib.mkDefault true;
+
+      prime = {
+        amdgpuBusId = "PCI:5:0:0";
+        nvidiaBusId = "PCI:1:0:0";
+      };
+    };
+  };
+}

lenovo/legion/16achg6/nvidia/default.nix

@@ -0,0 +1,13 @@
+{ ... }:
+
+{
+  imports = [ ../hybrid ];
+  services.xserver.videoDrivers = [ "nvidia" ];
+  hardware = {
+    nvidia.prime.offload.enable = false;
+    amdgpu = {
+      amdvlk = false;
+      opencl = false;
+    };
+  };
+}