[IMP] Add upload state tracking on EBICS payment files

account_ebics:
- Add pain_state and ebics_order_number to ebics.file
- Set these fields after a successful upload
- Add neutralized property to api.Environment

account_ebics_batch_payment:
- Add EBICS notebook page with upload info to batch payment form
- Post chatter message with OrderID after upload

account_ebics_payment_order:
- Fix broken postprocess: replace deprecated active_model/active_id
  context keys with model/id

account_ebics/models/ebics_file.py

@@ -70,6 +70,12 @@ class EbicsFile(models.Model):
         readonly=True,
     )
     note = fields.Text(string="Notes")
+    ebics_order_number = fields.Char(string="EBICS OrderID", readonly=True)
+    pain_state = fields.Selection(
+        [("draft", "Draft"), ("uploaded", "Uploaded"), ("error", "Error")],
+        default="draft",
+        readonly=True,
+    )
     note_process = fields.Text(
         string="Process Notes",
         readonly=True,