feat: Update module version to 19.0, add a .gitignore file, and modify partner editor and customer order related files.

.gitignore

@@ -0,0 +1,15 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Editor
+.vscode/
+.idea/
+
+# Odoo
+*.pot

__manifest__.py

@@ -1,6 +1,6 @@
 {
     'name': 'POS Customer Orders',
-    'version': '17.0.1.0.0',
+    'version': '19.0.1.0.0',
     'category': 'Point of Sale',
     'summary': 'Show last 2 orders in POS Customer Details',
     'author': 'Suherdy Yacob',