set vscodium plugin dependencies and lsp configuration

.vscode/extensions.json

@@ -1,4 +1,15 @@
 {
-  "recommendations": ["astro-build.astro-vscode", "kamadorueda.alejandra"],
+  "recommendations": [
+    "arrterian.nix-env-selector",
+    "astro-build.astro-vscode",
+    "bradlc.vscode-tailwindcss",
+    "csstools.postcss",
+    "ecmel.vscode-html-css",
+    "formulahendry.auto-complete-tag",
+    "jnoortheen.nix-ide",
+    "kamadorueda.alejandra",
+    "mikestead.dotenv",
+    "stylelint.vscode-stylelint",
+  ],
   "unwantedRecommendations": []
 }

.vscode/settings.json

@@ -1,8 +1,20 @@
 {
+  "editor.linkedEditing": true,
   "editor.formatOnSave": true,
+  "files.associations": {
+    "*.mdx": "markdown",
+    "*.css": "tailwindcss",
+    "flake.lock": "json"
+  },
   "[nix]": {
     "editor.defaultFormatter": "kamadorueda.alejandra"
   },
+  "[html]": {
+    "editor.defaultFormatter": "vscode.html-language-features"
+  },
+  "[css]": {
+    "editor.defaultFormatter": "vscode.css-language-features"
+  },
   "[json]": {
     "editor.defaultFormatter": "vscode.json-language-features"
   },
@@ -18,7 +30,13 @@
   "[javascript]": {
     "editor.defaultFormatter": "vscode.typescript-language-features"
   },
+  "[tailwindcss]": {
+    "editor.defaultFormatter": "bradlc.vscode-tailwindcss"
+  },
   "[astro]": {
     "editor.defaultFormatter": "astro-build.astro-vscode"
-  }
+  },
+  "nix.serverPath": "nil",
+  "nix.enableLanguageServer": true,
+  "alejandra.program": "alejandra"
 }