[IMP] base_import_module: tell user what they actually can import

This commits adds a message to the module import wizard to make it more
clear what kind of modules can be imported through the front end.

project : RD feedback
task : [base_import_module] what it is not for.
opw-1939967

closes odoo/odoo#31057

addons/base_import_module/i18n/base_import_module.pot

@@ -132,6 +132,11 @@ msgstr ""
 msgid "No file sent."
 msgstr ""
 
+#. module: base_import_module
+#: model:ir.ui.view,arch_db:base_import_module.view_base_module_import
+msgid "Note: you can only import data modules (.xml files and static assets)"
+msgstr ""
+
 #. module: base_import_module
 #: code:addons/base_import_module/controllers/main.py:25
 #, python-format

addons/base_import_module/views/base_import_module_view.xml

@@ -8,6 +8,7 @@
                 <form string="Import module">
                     <field name="state" invisible="1"/>
                     <separator string="Import Module" colspan="4"/>
+                    <p class="alert alert-warning">Note: you can only import data modules (.xml files and static assets)</p>
                     <group states="init" col="4">
                         <label string="Select module package to import (.zip file):" colspan="4"/>
                         <field name="module_file" colspan="4"/>