feat: JsonEditor for inputting JSON content (#4)

* feat(editor): add JsonEditor component for JSON configuration editing

* fix(provider): update API Key visibility logic in ProviderForm component

* fix(editor): stabilize JsonEditor height and restore API Key logic

- Revert API Key visibility to preset-based rule and injection to non-custom preset only.
- Reduce JsonEditor min-height from rows*22px to rows*18px to lessen layout jitter when switching presets.
- Keep fonts/size consistent with the previous textarea for visual parity.

* - fix(form): remove websiteUrl auto-extraction from JSON to prevent incorrect overrides

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Co-authored-by: Jason <farion1231@gmail.com>

package.json

@@ -26,7 +26,12 @@
     "vite": "^5.0.0"
   },
   "dependencies": {
+    "@codemirror/lang-json": "^6.0.2",
+    "@codemirror/state": "^6.5.2",
+    "@codemirror/theme-one-dark": "^6.1.3",
+    "@codemirror/view": "^6.38.2",
     "@tauri-apps/api": "^2.8.0",
+    "codemirror": "^6.0.2",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"
   }