🧑‍💻 (emails) Add decent emails management

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

packages/emails/theme.ts

@@ -0,0 +1,17 @@
+// Colors
+export const black = '#000'
+export const gold = '#fadf98'
+export const grayDark = '#888'
+export const grayLight = '#f5f5f5'
+export const blue = '#0042da'
+
+// Typography
+export const textSm = 14
+export const textBase = 16
+export const textLg = 24
+export const textXl = 30
+export const leadingTight = '120%'
+export const leadingRelaxed = '160%'
+
+// Borders
+export const borderBase = 6