Add modular Roblox buyer bot and documentation

models/pricing.py

@@ -0,0 +1,24 @@
+from dataclasses import dataclass
+
+
+@dataclass(slots=True)
+class CookieDonationInfo:
+    cookie: str
+    user_id: int
+    username: str | None
+    all_time: int
+    year: int
+
+
+@dataclass(slots=True)
+class PricingResult:
+    cookie: str
+    user_id: int
+    username: str | None
+    all_time: int
+    year: int
+    price: float
+    rate_key: str | None = None
+    rate_name: str | None = None
+    donate_used: int = 0
+    is_avg: bool = False