Add wallet page

With setup code to connect Blue Wallet to Kosmos account wallets

app/controllers/wallet_controller.rb

@@ -0,0 +1,21 @@
+require "rqrcode"
+
+class WalletController < ApplicationController
+  before_action :require_user_signed_in
+
+  def index
+    @current_section = :wallet
+
+    @wallet_url = "lndhub://#{current_user.ln_login}:#{current_user.ln_password}@https://lndhub.kosmos.org"
+
+    qrcode = RQRCode::QRCode.new(@wallet_url)
+    @svg = qrcode.as_svg(
+      color: "000",
+      shape_rendering: "crispEdges",
+      module_size: 6,
+      standalone: true,
+      use_path: true
+    )
+  end
+
+end