Add some webrings

Difficult euroring parsing was made by GPT too. Its realisation is
horror

blueprints/root/__init__.py

@@ -1,6 +1,8 @@
 from htmlmin import minify
 from flask import Blueprint, render_template, request, jsonify
 
+from .modules.euroring import data as euroring_data, refresh_cache as euroring_refresh
+
 bp = Blueprint(
     "root",
     __name__,
@@ -9,8 +11,9 @@ bp = Blueprint(
 )
 
 def render_tmpl(filename: str) -> str:
+    euroring_refresh()
     return minify(
-        render_template(filename),
+        render_template(filename, euroring=euroring_data),
         remove_empty_space=True
     )