Add simple tree graph mode (#4)

Add a new kind of family tree: simple tree

Reviewed-on: #4

geneit_app/package-lock.json

@@ -35,6 +35,7 @@
         "react-easy-crop": "^5.0.0",
         "react-router-dom": "^6.11.2",
         "react-scripts": "^5.0.1",
+        "react-zoom-pan-pinch": "^3.1.0",
         "svg2pdf.js": "^2.2.2",
         "typescript": "^4.9.5",
         "web-vitals": "^2.1.4"
@@ -13603,6 +13604,19 @@
         "react-dom": ">=16.6.0"
       }
     },
+    "node_modules/react-zoom-pan-pinch": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/react-zoom-pan-pinch/-/react-zoom-pan-pinch-3.1.0.tgz",
+      "integrity": "sha512-a3LlP8QPgTikvteCNkZ3X6wIWC0lrg1geP5WkUJyx2MXXAhHQek3r17N1nT/esOiWGuPIECnsd9AGoK8jOeGcg==",
+      "engines": {
+        "node": ">=8",
+        "npm": ">=5"
+      },
+      "peerDependencies": {
+        "react": "*",
+        "react-dom": "*"
+      }
+    },
     "node_modules/read-cache": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/read-cache/-/read-cache-1.0.0.tgz",