chore: add licence details to distribution (#9)

Author: danfimov

pyproject.toml

@@ -3,6 +3,8 @@ name = "taskiq-ydb"
 version = "0.3.1"
 description = "YDB integration for taskiq"
 readme = "README.md"
+license = "MIT"
+license-files = ["LICENSE"]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",