Add contest table and routes

src/models/contest.py

@@ -0,0 +1,25 @@
+from pydantic import BaseModel, Field
+from datetime import date, datetime
+
+
+class Contest(BaseModel):
+    id: int
+    year: int = Field(
+        default_factory=lambda: datetime.now().year,
+        description="The year of the contest",
+        examples=[2025],
+    )
+    is_active: bool = Field(
+        default=True, description="Is this the active contest?", examples=[True, False]
+    )
+    finals_date: date = Field(
+        description="The date of the finals", examples=["2025-05-15"]
+    )
+    created_at: datetime = Field(
+        description="The date and time when the contest was created",
+        examples=["2025-05-15T17:40:42.000Z"],
+    )
+    updated_at: datetime = Field(
+        description="The date and time when the contest was last updated",
+        examples=["2025-05-15T17:40:42.000Z"],
+    )