feat: set app name and logo on install and disable signup

- set app_name and app_logo_url on install
- disabled signup

community/install.py

@@ -0,0 +1,16 @@
+"""Hooks that are executed during and after install.
+"""
+import os
+import frappe
+
+def after_install():
+    set_app_name()
+    disable_signup()
+
+def set_app_name():
+    app_name = os.getenv("FRAPPE_APP_NAME")
+    if app_name:
+        frappe.db.set_value('System Settings', None, 'app_name', app_name)
+
+def disable_signup():
+    frappe.db.set_value("Website Settings", None, "disable_signup", 1)