feat(configurations)!: flatten down, introduce meta.nix

Flatten down directory structure:
- From: `./hosts/${configuration-type}/${system}/{configuration,deploy}.nix`
-   To: `./hosts/${configuration-type}/{meta,configuration}.nix`
Keep `system` and `deploy-rs` config in `meta.nix`
Update `flake.lock`

hosts/nix-darwin/apavel-a01/home/apavel.nix

@@ -20,7 +20,7 @@
 
     # Zig
     zigpkgs.master
-    inputs.zls-overlay.packages.x86_64-darwin.default
+    # inputs.zls-overlay.packages.x86_64-darwin.default
   ];
 
   programs.git = {

hosts/nix-darwin/apavel-a01/meta.nix

@@ -0,0 +1,3 @@
+{
+  system = "x86_64-darwin";
+}

hosts/nix-darwin/limonka/home/pavelatanasov.nix

@@ -66,7 +66,7 @@
     nurl
 
     # Mail
-    # himalaya
+    himalaya
 
     # Java
     graalvm-ce
@@ -87,7 +87,7 @@
 
     # Zig
     zigpkgs.master
-    inputs.zls-overlay.packages.${pkgs.system}.default
+    # inputs.zls-overlay.packages.${pkgs.system}.default
 
     # Android
     android-tools

hosts/nix-darwin/limonka/meta.nix

@@ -0,0 +1,15 @@
+{
+  system = "aarch64-darwin";
+  deploy = {
+    hostname = "localhost";
+    sshUser = "pavelatanasov";
+    user = "pavelatanasov";
+    sudo = "sudo -u";
+    sshOpts = [ ];
+    fastConnection = false;
+    autoRollback = true;
+    magicRollback = true;
+    tempPath = "/Users/pavelatanasov/.deploy-rs";
+    remoteBuild = true;
+  };
+}

hosts/nix-darwin/limontozu/meta.nix

@@ -0,0 +1,3 @@
+{
+  system = "x86_64-darwin";
+}