refactor(auth): use heex templates

Signed-off-by: SphericalKat <amolele@gmail.com>

config/releases.exs

@@ -33,31 +33,34 @@ config :ketbin, KetbinWeb.Endpoint,
   secret_key_base: secret_key_base,
   server: true
 
-  smtp_relay =
-    System.get_env("SWOOSH_SMTP_RELAY") ||
-      raise """
-      environment variable SWOOSH_SMTP_RELAY is missing.
-      """
-  username =
-    System.get_env("SWOOSH_USERNAME") ||
-      raise """
-      environment variable SWOOSH_USERNAME is missing.
-      """
-  password =
-    System.get_env("SWOOSH_PASSWORD") ||
-      raise """
-      environment variable SWOOSH_PASSWORD is missing.
-      """
+smtp_relay =
+  System.get_env("SWOOSH_SMTP_RELAY") ||
+    raise """
+    environment variable SWOOSH_SMTP_RELAY is missing.
+    """
+
+username =
+  System.get_env("SWOOSH_USERNAME") ||
+    raise """
+    environment variable SWOOSH_USERNAME is missing.
+    """
+
+password =
+  System.get_env("SWOOSH_PASSWORD") ||
+    raise """
+    environment variable SWOOSH_PASSWORD is missing.
+    """
+
+# configure mailer
+config :ketbin, Ketbin.Mailer,
+  adapter: Swoosh.Adapters.SMTP,
+  relay: smtp_relay,
+  username: username,
+  password: password,
+  tls: :always,
+  auth: :always,
+  port: 587
 
-  # configure mailer
-  config :ketbin, Ketbin.Mailer,
-    adapter: Swoosh.Adapters.SMTP,
-    relay: smtp_relay,
-    username: username,
-    password: password,
-    tls: :always,
-    auth: :always,
-    port: 587
 # ## Using releases (Elixir v1.9+)
 #
 # If you are doing OTP releases, you need to instruct Phoenix