Add support for Django 4

[jeduardo211]

Django 4.0 no longer contains the url method for defining routes.
This pull request defines the routers using the more modern path method, and defines the app_name to allow for URLs namespaces.

[denpufa]

can aprove this pr?

[sonus21]

@denpufa can you please share test report?
./run-tests.sh

[sonus21]

@jeduardo211 ^

[denpufa]

/home/rodolfo/error-tracker/error_tracker/django/__init__.py:28: UserWarning: APP_ERROR_DB_MODEL is not set using default model
  warnings.warn("APP_ERROR_DB_MODEL is not set using default model")
/home/rodolfo/error-tracker/error_tracker/libs/utils.py:121: UserWarning: Default Masking module will be used
  warnings.warn(message)
/home/rodolfo/error-tracker/error_tracker/libs/utils.py:121: UserWarning: Default ContextBuilder module will be used
  warnings.warn(message)
Creating test database for alias 'default'...
/home/rodolfo/error-tracker/error_tracker/django/__init__.py:28: UserWarning: APP_ERROR_DB_MODEL is not set using default model
  warnings.warn("APP_ERROR_DB_MODEL is not set using default model")
/home/rodolfo/error-tracker/error_tracker/django/__init__.py:28: UserWarning: APP_ERROR_DB_MODEL is not set using default model
  warnings.warn("APP_ERROR_DB_MODEL is not set using default model")
.................
----------------------------------------------------------------------
Ran 17 tests in 1.685s

OK

@sonus21 django report here, want flask too?