Add FastAPI backend and integrate with Gradio frontend for workout plan generation

backend.py

@@ -0,0 +1,18 @@
+from fastapi import FastAPI
+from pydantic import BaseModel
+
+app = FastAPI()
+
+class UserData(BaseModel):
+    weight: float
+    height: float
+    age: int
+    body_type: str
+    goals: str
+    preferences: str
+
+@app.post("/generate_plan")
+def generate_plan(data: UserData):
+    # Lógica para gerar o plano de treino personalizado
+    plan = f"Generated plan for {data.body_type} body type with goals: {data.goals} and preferences: {data.preferences}"
+    return {"plan": plan}