Enable flask command, add cron target.

Adding an empty __init__.py, the imports-only cli.py, and setting
FLASK_APP in the environment are enough to get the `flask` command
to work. This will enable future changes, including database
migrations.

The proximate reason for the fix is to add a `flask cron` command
to run scheduled tasks within the application from cron. Specifically,
the lottery should be run from cron.

env

@@ -1,3 +1,4 @@
+export FLASK_APP="/service/files/cli:app"
 export MASTER_KEY="blahblahblah"
 export DOMAIN="localhost"
 export SITE_NAME="rDrama"

files/cli.py

@@ -0,0 +1,10 @@
+from .__main__ import app, db_session
+from flask import g
+import files.helpers.cron
+
+#from flask_migrate import Migrate
+#from flask_sqlalchemy import SQLAlchemy
+#import files.classes
+
+#db = SQLAlchemy(app)
+#migrate = Migrate(app, db)

files/helpers/cron.py

@@ -0,0 +1,18 @@
+from files.cli import g, app, db_session
+import click
+import files.helpers.lottery
+
+@app.cli.command('cron', help='Run scheduled tasks.')
+@click.option('--every-5m', is_flag=True, help='Call every 5 minutes.')
+@click.option('--every-1h', is_flag=True, help='Call every 1 hour.')
+@click.option('--every-1d', is_flag=True, help='Call every 1 day.')
+def cron(every_5m, every_1h, every_1d):
+	g.db = db_session()
+
+	if every_5m:
+		pass
+	if every_1h:
+		pass
+	if every_1d:
+		pass
+