feat: return information of majors

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "data"]
+	path = data
+	url = git@github.com:open-source-uch/malla-api-data.git

main.py

@@ -1,12 +1,30 @@
 from fastapi import FastAPI
+import json
+import os
 
 app = FastAPI()
 
 
 @app.get("/")
 async def root():
-    return {"message": "Hello World"}
+    return {"message": "Hello World"}  
 
-@app.get("/galleta")
-async def get_source():
-    return {"ananan": 12}
+@app.get("/fcfm/{version}/mallas/{major}")
+async def major(version: str, major: str):
+    version_path = f"data/fcfm/{version}"
+    if not os.path.exists(version_path):
+        return {
+            "status": "error",
+            "message": f"Version {version} not found",
+            "code": 404,
+        }
+    major_path = version_path + f"/mallas/{major}/index.json"
+    if not os.path.exists(major_path):
+        return {
+            "status": "error",
+            "message": f"Major {major} not found",
+            "code": 404,
+        }
+
+    with open(major_path, "r") as f:
+        return json.load(f)