feat: replace Kaggle CSV with Wikipedia scraper for historical match data

Add scripts/scrape-wikipedia.ts that fetches all 22 World Cups (1930–2022)
from English Wikipedia via MediaWiki API, handles group sub-pages, AET/penalty
detection, and goal parsing, writing openfootball-format JSON to app/data/openfootball/.

Rewrite scripts/seed.ts to read these local JSON files instead of the Kaggle
CSV, producing 965 matches and 2716 goals with per-group assignments for all
historical tournaments (enabling group standings on tournament pages).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/data/openfootball/2022/worldcup.stadiums.json

@@ -0,0 +1,36 @@
+{
+  "stadiums": [
+    {
+      "name": "Khalifa International Stadium",
+      "city": "Al Rayyan"
+    },
+    {
+      "name": "Ahmad bin Ali Stadium",
+      "city": "Al Rayyan"
+    },
+    {
+      "name": "Al Thumama Stadium",
+      "city": "Doha"
+    },
+    {
+      "name": "Al Bayt Stadium",
+      "city": "Al Khor"
+    },
+    {
+      "name": "Al Janoub Stadium",
+      "city": "Al Wakrah"
+    },
+    {
+      "name": "Stadium 974",
+      "city": "Doha"
+    },
+    {
+      "name": "Education City Stadium",
+      "city": "Al Rayyan"
+    },
+    {
+      "name": "Lusail Stadium",
+      "city": "Lusail"
+    }
+  ]
+}