chore(vscode): update debug and task configs for Jekyll

- switch launch config from `pwa-chrome` to `chrome` because it's deprecated
- rename preLaunchTask to `Serve`
- rename `Run Jekyll` task to `Serve` and enable livereload
- add build task and problem matchers
- align with VS Code task/launch integration per https://code.visualstudio.com/docs/debugtest/tasks

Author: j4y

.vscode/launch.json

@@ -3,11 +3,11 @@
   "configurations": [
     {
       "name": "Debug Jekyll",
-      "type": "pwa-chrome",
+      "type": "chrome",
       "request": "launch",
       "url": "http://127.0.0.1:4000",
       "webRoot": "${workspaceFolder}",
-      "preLaunchTask": "Run Jekyll"
+      "preLaunchTask": "Serve"
     }
   ]
 }

.vscode/tasks.json

@@ -2,11 +2,22 @@
   "version": "2.0.0",
   "tasks": [
     {
-      "label": "Run Jekyll",
+      "label": "Serve",
       "type": "shell",
-      "command": "mise exec -- bundle exec jekyll serve",
+      "command": "mise exec -- bundle exec jekyll serve --livereload",
+      "group": {
+        "kind": "test",
+        "isDefault": true
+      },
       "isBackground": true,
-      "problemMatcher": []
+      "problemMatcher": ["$jekyll-error-watch", "$jekyll-warning-watch"]
+    },
+    {
+      "label": "Build",
+      "type": "shell",
+      "command": "mise exec -- bundle exec jekyll build",
+      "group": "build",
+      "problemMatcher": ["$jekyll-error", "$jekyll-warning"],
     }
   ]
 }