[IMP] energy_selfconsumption: send invoicing reminder for energy delivered projects.

Trello Card

energy_selfconsumption/data/ir_cron.xml

+<?xml version="1.0" encoding="utf-8" ?>
+<odoo>
+    <data>
+        <record id="send_invoicing_reminder_to_admin" model="ir.cron">
+            <field name="name">Send Invoicing Reminder to Admin User</field>
+            <field
+        name="model_id"
+        ref="energy_selfconsumption.model_energy_selfconsumption_selfconsumption"
+      />
+            <field name="code">model.send_invoicing_reminder()</field>
+            <field name="user_id" ref="base.user_root" />
+            <field name='interval_number'>1</field>
+            <field name='interval_type'>days</field>
+            <field name="numbercall">-1</field>
+            <field name="doall" eval="False" />
+        </record>
+    </data>
+</odoo>