modularize src

+ merge main.py and manage.py
+ move start logic to swingmusic/__main__.py
+ add a run.py on the project root

swingmusic/models/user.py

@@ -0,0 +1,28 @@
+from dataclasses import asdict, field, dataclass
+import json
+
+
+@dataclass(slots=True)
+class User:
+    id: int
+    image: str
+    password: str
+    username: str
+    roles: list[str]
+    extra: dict[str, str] = field(default_factory=dict)
+
+    # NOTE: roles: ['admin', 'user', 'curator']
+    roles: list[str] = field(default_factory=lambda: ["user"])
+
+    def todict(self):
+        this_dict = asdict(self)
+        del this_dict["password"]
+
+        return this_dict
+
+    def todict_simplified(self):
+        return {
+            "id": self.id,
+            "username": self.username,
+            "firstname": self.extra["firstname"] if self.extra else "",
+        }