Move from sendgrid to nodemailer for emails

package.json

@@ -38,6 +38,7 @@
     "lodash": "^4.17.21",
     "marked": "^6.0.0",
     "netlify": "^13.1.10",
+    "nodemailer": "^6.9.5",
     "openai-edge": "^1.2.2",
     "pluralize": "^8.0.0",
     "sirv": "^2.0.3",
@@ -55,6 +56,7 @@
     "@sveltejs/kit": "^1.22.4",
     "@tailwindcss/typography": "^0.5.9",
     "@types/lodash": "^4.14.196",
+    "@types/nodemailer": "^6.4.11",
     "autoprefixer": "^10.4.14",
     "carbon-components-svelte": "^0.79.0",
     "carbon-icons-svelte": "^12.1.0",