* Add mapping property "sorry_page". Must be an URL, default value is
  configurable (see next point)
* Add new plugin configuration "default_sorry_page" default to https://sorry.ec.europa.eu/
* Fixed mapping import form don't expose all mapping properties

* Properties are:
  - gzip_proxied
  - keepalive_timeout
  - proxy_cache
  - proxy_read_timeout
  - client_max_body_size
* Add E2E tests

Mapping can now have SAML Coniguration:

* Only API was implemented

* Add some default columns to table
* Update filtrering field in forms

* Add HTTP Header for a Mapping
* Remove / edit HTTP Header

* add constraint: name, mapping_id and apply_to combinaison are unique
* value can be null and limit is 256 char now

Some Fix

Update doc and bump version

Bump version

- /src/netbox_rps_plugin/__init__.py
- /setup.py