Add European Union flag

entries/eu_flag.json

+{
+    "id": 3887111017,
+    "name": "European Union",
+    "description": "Flag of the European Union",
+    "links": {
+        "website": [
+            "https://european-union.europa.eu/index_en"
+        ]
+    },
+    "path": {
+        "0": [
+            [
+                362,
+                54
+            ],
+            [
+                397,
+                54
+            ],
+            [
+                397,
+                77
+            ],
+            [
+                362,
+                77
+            ]
+        ]
+    },
+    "center": {
+        "0": [
+            380,
+            66
+        ]
+    }
+}
\ No newline at end of file