chore: optimize workspace extension recommendations

- Replace Docker extension: ms-azuretools.vscode-docker (official)
- Add unwanted recommendations to prevent conflicts
- Remove github.copilot (unified into copilot-chat)
- Block docker.docker and vscode-containers (use official Docker)
- Organize extensions by relevance (core dev tools first)

Author: nanotaboada

.vscode/extensions.json

@@ -1,14 +1,22 @@
 {
   "recommendations": [
     "ms-dotnettools.csdevkit",
-    "codezombiech.gitignore",
-    "conventionalcommits.extension",
-    "foxundermoon.shell-format",
-    "github.vscode-github-actions",
+    "csharpier.csharpier-vscode",
+    "yy0931.vscode-sqlite3-editor",
+    "ms-azuretools.vscode-docker",
+    "sonarsource.sonarlint-vscode",
+    "github.copilot-chat",
     "github.vscode-pull-request-github",
-    "ms-azuretools.vscode-containers",
+    "github.vscode-github-actions",
     "redhat.vscode-yaml",
-    "sonarsource.sonarlint-vscode",
-    "yy0931.vscode-sqlite3-editor"
+    "foxundermoon.shell-format",
+    "davidanson.vscode-markdownlint",
+    "codezombiech.gitignore"
+  ],
+  "unwantedRecommendations": [
+    "ms-dotnettools.csharp",
+    "ms-azuretools.vscode-containers",
+    "github.copilot",
+    "docker.docker"
   ]
 }