refactor: use react email for email templates (#734)

Co-authored-by: Alessandro (Ale) Segala <43508+ItalyPaleAle@users.noreply.github.com>
Co-authored-by: Elias Schneider <login@eliasschneider.com>

email-templates/props.ts

@@ -0,0 +1,9 @@
+export const sharedPreviewProps = {
+  logoURL: "https://pocket-id.org/img/logo.png",
+  appName: "Pocket ID",
+};
+
+export const sharedTemplateProps = {
+  logoURL: "{{.LogoURL}}",
+  appName: "{{.AppName}}",
+};