Add soundcloud support

bot/filters/search.py

@@ -11,3 +11,15 @@ class ServiceSearchFilter(BaseFilter):
                 inline_query.query.startswith(self.service_letter) and
                 inline_query.query != self.service_letter
         )
+
+
+class ServiceSearchMultiletterFilter(BaseFilter):
+    def __init__(self, service_lettes: list[str]):
+        self.service_letter = [f'{letter}:' for letter in service_lettes]
+
+    async def __call__(self, inline_query: InlineQuery):
+        return (
+                any(inline_query.query.startswith(letter) for letter in
+                    self.service_letter) and
+                inline_query.query not in self.service_letter
+        )