refactor: add base parse module

gallery/sketch/parse/date.py

@@ -0,0 +1,12 @@
+import datetime
+
+import dateparser
+
+from .core import ParseError
+
+
+def parse_date(value: str) -> datetime.datetime:
+    date = dateparser.parse(value, languages=["ru"])
+    if date is None:
+        raise ParseError("Invalid date", value)
+    return date