🧑‍💻 (emails) Add decent emails management

Use mjml-react to generate emails. Put all emails in a independent package.

packages/emails/components/Button.tsx

@@ -0,0 +1,26 @@
+import React from 'react'
+import { MjmlButton } from '@faire/mjml-react'
+import { blue, grayLight } from '../theme'
+import { leadingTight, textBase, borderBase } from '../theme'
+
+type ButtonProps = {
+  link: string
+  children: React.ReactNode
+}
+
+export const Button = ({ link, children }: ButtonProps) => (
+  <MjmlButton
+    lineHeight={leadingTight}
+    fontSize={textBase}
+    fontWeight="700"
+    height={32}
+    padding="0"
+    align="left"
+    href={link}
+    backgroundColor={blue}
+    color={grayLight}
+    borderRadius={borderBase}
+  >
+    {children}
+  </MjmlButton>
+)