Add simple script for inserting ofxsources

This only adds one institution that I care about, AFCU, but could be
extended to use the data from ofxhome.com. I downloaded the data from
them but found two problems. One, they work in XML, which I don't feel
like parsing, but two and far more importantly, they provide the second
piece of data I need, the routing number for the bank. That sucks. So
it's likely that if this project does well we will have more data than
them.

bin/update-ofxsource

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+import logging
+import uuid
+
+import vanth.main
+import vanth.tables
+
+LOGGER = logging.getLogger(__name__)
+def main():
+    vanth.main.setup_logging()
+    config = vanth.main.get_config()
+    engine = vanth.main.create_db_connection(config)
+
+    new_uuid = uuid.uuid4()
+    query = vanth.tables.OFXSource.insert().values( # pylint: disable=no-value-for-parameter
+        uuid    = str(new_uuid),
+        name    = 'America First Credit Union',
+        fid     = '54324',
+        bankid  = '324377516',
+    )
+    results = engine.execute(query)
+    LOGGER.info("Created OFX source %s", results.inserted_primary_key[0])
+
+if __name__ == '__main__':
+    main()