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/1970/worldcup.groups.json

@@ -0,0 +1,40 @@
+{
+  "groups": [
+    {
+      "name": "Group 1",
+      "teams": [
+        "Mexico",
+        "Soviet Union",
+        "Belgium",
+        "El Salvador"
+      ]
+    },
+    {
+      "name": "Group 2",
+      "teams": [
+        "Uruguay",
+        "Israel",
+        "Italy",
+        "Sweden"
+      ]
+    },
+    {
+      "name": "Group 3",
+      "teams": [
+        "England",
+        "Romania",
+        "Brazil",
+        "Czechoslovakia"
+      ]
+    },
+    {
+      "name": "Group 4",
+      "teams": [
+        "Peru",
+        "Bulgaria",
+        "West Germany",
+        "Morocco"
+      ]
+    }
+  ]
+}