on email tab create a test email button to test smtp integration

package-lock.json

@@ -43,6 +43,7 @@
         "genkit": "^1.14.1",
         "lucide-react": "^0.475.0",
         "next": "15.3.3",
+        "nodemailer": "^6.9.14",
         "patch-package": "^8.0.0",
         "react": "^18.3.1",
         "react-day-picker": "^8.10.1",
@@ -56,6 +57,7 @@
       "devDependencies": {
         "@types/better-sqlite3": "^7.6.11",
         "@types/node": "^20",
+        "@types/nodemailer": "^6.4.15",
         "@types/react": "^18",
         "@types/react-dom": "^18",
         "genkit-cli": "^1.14.1",
@@ -4300,6 +4302,16 @@
         "undici-types": "~6.19.2"
       }
     },
+    "node_modules/@types/nodemailer": {
+      "version": "6.4.17",
+      "resolved": "https://registry.npmjs.org/@types/nodemailer/-/nodemailer-6.4.17.tgz",
+      "integrity": "sha512-I9CCaIp6DTldEg7vyUTZi8+9Vo0hi1/T8gv3C89yk1rSAAzoKQ8H8ki/jBYJSFoH/BisgLP8tkZMlQ91CIquww==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/prop-types": {
       "version": "15.7.14",
       "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.14.tgz",
@@ -7873,6 +7885,15 @@
         "url": "https://opencollective.com/node-fetch"
       }
     },
+    "node_modules/nodemailer": {
+      "version": "6.10.1",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.10.1.tgz",
+      "integrity": "sha512-Z+iLaBGVaSjbIzQ4pX6XV41HrooLsQ10ZWPUehGmuantvzWoDVBnmsdUcOIDM1t+yPor5pDhVlDESgOMEGxhHA==",
+      "license": "MIT-0",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
     "node_modules/normalize-path": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",