Add project metadat

pyproject.toml

 [tool.poetry]
 name = "django-splitted-input"
 version = "0.1.0"
-description = ""
+description = "A widget to have a django text input splitted into multiple HTML inputs."
 authors = ["Julian Leucker <leuckerj@gmail.com>"]
+readme = "README.md"
+repository = "https://edugit.org/AlekSIS/libs/django-splitted-input"
+keywords = ["django", "widget"]
+classifiers = [
+    "Environment :: Web Environment",
+    "Framework :: Django :: 3.1",
+    "Intended Audience :: Developers",
+    "Topic :: Internet :: WWW/HTTP :: WSGI :: Application",
+    "Topic :: Software Development :: Libraries :: Application Frameworks",
+    "Typing :: Typed",
+]
+
 
 [tool.poetry.dependencies]
 python = "^3.8.6"