[IMP] base: Display 'Contains In-App Purchases' on module form views

Purpose
=======

There are no mentions that a module may contain In-App Purchases in Apps.
We should inform the users of this so they make a conscious decision when
installing such app.

closes odoo/odoo#40731

Taskid: 2129214
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

odoo/addons/base/models/ir_module.py

@@ -294,11 +294,16 @@ class Module(models.Model):
     icon = fields.Char('Icon URL')
     icon_image = fields.Binary(string='Icon', compute='_get_icon_image')
     to_buy = fields.Boolean('Odoo Enterprise Module', default=False)
+    has_iap = fields.Boolean(compute='_compute_has_iap')
 
     _sql_constraints = [
         ('name_uniq', 'UNIQUE (name)', 'The name of the module must be unique!'),
     ]
 
+    def _compute_has_iap(self):
+        for module in self:
+            module.has_iap = 'iap' in module.upstream_dependencies(exclude_states=('',)).mapped('name')
+
     def unlink(self):
         if not self:
             return True

odoo/addons/base/views/ir_module_views.xml

@@ -75,12 +75,14 @@
                             <button name="button_upgrade_cancel" states="to upgrade" string="Cancel Upgrade" type="object" class="btn btn-secondary mr-1"/>
                             <button name="button_install_cancel" states="to install" string="Cancel Install" type="object" class="btn btn-secondary mr-1"/>
                         </div>
+                        <h6 class="text-muted mt-2" attrs="{'invisible': [('has_iap', '=', False)]}">Contains In-App Purchases</h6>
                     </div>
                     <div class="oe_clear"/>
                     <notebook groups="base.group_no_one">
                         <page string="Information">
                             <group>
                                 <group>
+                                    <field name="has_iap" invisible="1"/>
                                     <field name="website" widget="url" attrs="{'invisible':[('website','=',False)]}"/>
                                     <field name="category_id" widget="selection"/>
                                     <field name="summary"/>