[ADD] add `project_timesheet_funding_wish` addon

adds in the timesheet lines:
- ``funding wish`` field: user tells if we want to be paid for the
time spent
- ``treated`` field: tells if the timesheet line has been considered
in internal invoicing process

Task: JOI-13

project_timesheet_funding_wish/models/hr_timesheet.py

@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+
+from odoo import _, fields, models
+
+class AccountAnalyticLine(models.Model):
+    _inherit = 'account.analytic.line'
+
+    funding_wish = fields.Selection([("free", "Free"),("accepted", "Payment accepted"),("expected", "Payment expected")], string=_("Funding wish"), copy=False)
+    treated = fields.Boolean(string=_("Treated"), copy=False)
+    
+