Add AdaptIntent alias

It is used so that the init argument isn't required and so that it is imported from within the mycroft module

mycroft/__init__.py

@@ -19,5 +19,6 @@ from mycroft.messagebus.message import Message
 from mycroft.skills.context import adds_context, removes_context
 from mycroft.skills.core import MycroftSkill, FallbackSkill, \
     intent_handler, intent_file_handler
+from mycroft.skills.intent_service import AdaptIntent
 
 MYCROFT_ROOT_PATH = abspath(join(dirname(__file__), '..'))

mycroft/skills/intent_service.py

@@ -15,6 +15,7 @@
 import time
 from adapt.context import ContextManagerFrame
 from adapt.engine import IntentDeterminationEngine
+from adapt.intent import IntentBuilder
 
 from mycroft.configuration import Configuration
 from mycroft.messagebus.message import Message
@@ -24,6 +25,11 @@ from mycroft.util.parse import normalize
 from mycroft.metrics import report_timing, Stopwatch
 
 
+class AdaptIntent(IntentBuilder):
+    def __init__(self, name=''):
+        super().__init__(name)
+
+
 class ContextManager(object):
     """
     ContextManager