Move System and Member to separate files

src/pluralkit/member.py

@@ -0,0 +1,31 @@
+from datetime import date, datetime
+
+from collections.__init__ import namedtuple
+
+
+class Member(namedtuple("Member", ["id", "hid", "system", "color", "avatar_url", "name", "birthday", "pronouns", "description", "prefix", "suffix", "created"])):
+    id: int
+    hid: str
+    system: int
+    color: str
+    avatar_url: str
+    name: str
+    birthday: date
+    pronouns: str
+    description: str
+    prefix: str
+    suffix: str
+    created: datetime
+
+    def to_json(self):
+        return {
+            "id": self.hid,
+            "name": self.name,
+            "color": self.color,
+            "avatar_url": self.avatar_url,
+            "birthday": self.birthday.isoformat() if self.birthday else None,
+            "pronouns": self.pronouns,
+            "description": self.description,
+            "prefix": self.prefix,
+            "suffix": self.suffix
+        }