Resolve ambiguity with apprise.plugins module namespace

While the namespace is physically made of modules, it has been amended
to be the namespace home for the corresponding notifier classes as well.

This turned out to confuse both humans and machines on various ends.

While it has apparently worked for a while, it croaks on Python 3.11
now, and is not considered to have been a good idea in general.

test/test_plugin_vonage.py

@@ -27,7 +27,8 @@ from unittest import mock
 import pytest
 import requests
 from json import dumps
-from apprise import plugins
+
+from apprise.plugins.NotifyVonage import NotifyVonage
 from helpers import AppriseURLTester
 
 # Disable logging for a cleaner testing output
@@ -63,7 +64,7 @@ apprise_url_tests = (
     ('vonage://AC{}:{}@{}/123/{}/abcd/'.format(
         'f' * 8, 'g' * 16, '3' * 11, '9' * 15), {
         # valid everything but target numbers
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
 
         # Our expected url(privacy=True) startswith() response:
         'privacy_url': 'vonage://A...f:****@',
@@ -71,31 +72,31 @@ apprise_url_tests = (
     ('vonage://AC{}:{}@{}'.format('h' * 8, 'i' * 16, '5' * 11), {
         # using phone no with no target - we text ourselves in
         # this case
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('vonage://_?key=AC{}&secret={}&from={}'.format(
         'a' * 8, 'b' * 16, '5' * 11), {
         # use get args to acomplish the same thing
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('vonage://_?key=AC{}&secret={}&source={}'.format(
         'a' * 8, 'b' * 16, '5' * 11), {
         # use get args to acomplish the same thing (use source instead of from)
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('vonage://_?key=AC{}&secret={}&from={}&to={}'.format(
         'a' * 8, 'b' * 16, '5' * 11, '7' * 13), {
         # use to=
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('vonage://AC{}:{}@{}'.format('a' * 8, 'b' * 16, '6' * 11), {
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
         # throw a bizzare code forcing us to fail to look it up
         'response': False,
         'requests_response_code': 999,
     }),
     ('vonage://AC{}:{}@{}'.format('a' * 8, 'b' * 16, '6' * 11), {
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
         # Throws a series of connection and transfer exceptions when this flag
         # is set and tests that we gracfully handle them
         'test_requests_exceptions': True,
@@ -129,7 +130,7 @@ apprise_url_tests = (
     ('nexmo://AC{}:{}@{}/123/{}/abcd/'.format(
         'f' * 8, 'g' * 16, '3' * 11, '9' * 15), {
         # valid everything but target numbers
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
 
         # Our expected url(privacy=True) startswith() response:
         'privacy_url': 'vonage://A...f:****@',
@@ -137,31 +138,31 @@ apprise_url_tests = (
     ('nexmo://AC{}:{}@{}'.format('h' * 8, 'i' * 16, '5' * 11), {
         # using phone no with no target - we text ourselves in
         # this case
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('nexmo://_?key=AC{}&secret={}&from={}'.format(
         'a' * 8, 'b' * 16, '5' * 11), {
         # use get args to acomplish the same thing
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('nexmo://_?key=AC{}&secret={}&source={}'.format(
         'a' * 8, 'b' * 16, '5' * 11), {
         # use get args to acomplish the same thing (use source instead of from)
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('nexmo://_?key=AC{}&secret={}&from={}&to={}'.format(
         'a' * 8, 'b' * 16, '5' * 11, '7' * 13), {
         # use to=
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
     }),
     ('nexmo://AC{}:{}@{}'.format('a' * 8, 'b' * 16, '6' * 11), {
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
         # throw a bizzare code forcing us to fail to look it up
         'response': False,
         'requests_response_code': 999,
     }),
     ('nexmo://AC{}:{}@{}'.format('a' * 8, 'b' * 16, '6' * 11), {
-        'instance': plugins.NotifyVonage,
+        'instance': NotifyVonage,
         # Throws a series of connection and transfer exceptions when this flag
         # is set and tests that we gracfully handle them
         'test_requests_exceptions': True,
@@ -200,17 +201,17 @@ def test_plugin_vonage_edge_cases(mock_post, no_throttling):
 
     # No apikey specified
     with pytest.raises(TypeError):
-        plugins.NotifyVonage(apikey=None, secret=secret, source=source)
+        NotifyVonage(apikey=None, secret=secret, source=source)
 
     with pytest.raises(TypeError):
-        plugins.NotifyVonage(apikey="  ", secret=secret, source=source)
+        NotifyVonage(apikey="  ", secret=secret, source=source)
 
     # No secret specified
     with pytest.raises(TypeError):
-        plugins.NotifyVonage(apikey=apikey, secret=None, source=source)
+        NotifyVonage(apikey=apikey, secret=None, source=source)
 
     with pytest.raises(TypeError):
-        plugins.NotifyVonage(apikey=apikey, secret="  ", source=source)
+        NotifyVonage(apikey=apikey, secret="  ", source=source)
 
     # a error response
     response.status_code = 400
@@ -221,7 +222,7 @@ def test_plugin_vonage_edge_cases(mock_post, no_throttling):
     mock_post.return_value = response
 
     # Initialize our object
-    obj = plugins.NotifyVonage(
+    obj = NotifyVonage(
         apikey=apikey, secret=secret, source=source)
 
     # We will fail with the above error code