Add basic FastAPI structure and random string generator

app/main.py

@@ -0,0 +1,9 @@
+from fastapi import FastAPI, HTTPException
+from fastapi.responses import RedirectResponse
+
+app = FastAPI()
+
+@app.get("/")
+def home():
+    return {"message": "URL Shortener API"}
+    

app/utils.py

@@ -0,0 +1,7 @@
+import string
+import random
+
+def generate_short_code(length=6):
+    characters = string.ascii_letters + string.digits
+    return ''.join(random.choice(characters) for _ in range(length))
+