feat : toast, modal 컴포넌트 추가 (#85)

* feat(fe): add toastify package

* feat(fe): add toast message on line count error

* feat(fe): add modal component, apply to screen

* feat(fe): add error message to modal component

* fix(fe): change defalut value indentation

* fix(fe): add timeout on axios client, fix modal padding and icon

* fix(fe): change timeout value

frontend/package.json

@@ -12,15 +12,16 @@
     "@testing-library/jest-dom": "^5.17.0",
     "@testing-library/react": "^13.4.0",
     "@testing-library/user-event": "^13.5.0",
-    "mathjax": "^3.2.2",
     "axios": "^1.6.2",
+    "mathjax": "^3.2.2",
     "monaco-editor": "^0.44.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-mathjax": "^1.0.1",
     "react-responsive": "^9.0.2",
     "react-responsive-modal": "^6.4.2",
     "react-scripts": "5.0.1",
+    "react-toastify": "^9.1.3",
     "styled-components": "^6.1.0",
     "web-vitals": "^2.1.4"
   },